DOCSLIB.ORG

Wind Cave National Park Geologic Resources Inventory Report

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Wind Cave National Park Geologic Resources Inventory Report National Park Service U.S. Department of the Interior Natural Resource Program Center Wind Cave National Park Geologic Resources Inventory Report Natural Resource Report NPS/NRPC/GRD/NRR—2009/087 THIS PAGE: Calcite Rafts record former water levels at the Deep End a remote pool discovered in January 2009. ON THE COVER: On the Candlelight Tour Route in Wind Cave boxwork protrudes from the ceiling in the Council Chamber. NPS Photos: cover photo by Dan Austin, inside photo by Even Blackstock Wind Cave National Park Geologic Resources Inventory Report Natural Resource Report NPS/NRPC/GRD/NRR—2009/087 Geologic Resources Division Natural Resource Program Center P.O. Box 25287 Denver, Colorado 80225 March 2009 U.S. Department of the Interior National Park Service Natural Resource Program Center Denver, Colorado The Natural Resource Publication series addresses natural resource topics that are of interest and applicability to a broad readership in the National Park Service and to others in the management of natural resources, including the scientific community, the public, and the NPS conservation and environmental constituencies. Manuscripts are peer-reviewed to ensure that the information is scientifically credible, technically accurate, appropriately written for the intended audience, and is designed and published in a professional manner. Natural Resource Reports are the designated medium for disseminating high priority, current natural resource management information with managerial application. The series targets a general, diverse audience, and may contain NPS policy considerations or address sensitive issues of management applicability. Examples of the diverse array of reports published in this series include vital signs monitoring plans; "how to" resource management papers; proceedings of resource management workshops or conferences; annual reports of resource programs or divisions of the Natural Resource Program Center; resource action plans; fact sheets; and regularly-published newsletters. Views, statements, findings, conclusions, recommendations and data in this report are solely those of the author(s) and do not necessarily reflect views and policies of the U.S. Department of the Interior, National Park Service. Mention of trade names or commercial products does not constitute endorsement or recommendation for use by the National Park Service. Printed copies of reports in these series may be produced in a limited quantity and they are only available as long as the supply lasts. This report is also available online from the Geologic Resources Inventory website (http://www.nature.nps.gov/geology/inventory/ gre_publications.cfm) and the Natural Resource Publication Management website (http:// www.nature.nps.gov/publications/NRPM/index.cfm) or by sending a request to the address on the back cover. Please cite this publication as: KellerLynn, K. 2009. Wind Cave National Park Geologic Resources Inventory Report. Natural Resource Report NPS/NRPC/GRD/NRR—2009/087. National Park Service, Denver, Colorado. ii NPS D-136, March 2009 Contents Figures .......................................................................................................................... iv Executive Summary ...................................................................................................... 1 Introduction ................................................................................................................... 2 Purpose of the Geologic Resources Inventory ........................................................................................................... 2 Establishment of Wind Cave National Park ................................................................................................................ 2 Protection of Cave Resources .................................................................................................................................... 2 Regional Geologic Setting .......................................................................................................................................... 2 Geologic Issues ............................................................................................................. 6 Airflow ......................................................................................................................................................................... 6 Impacts on the Cave Environment .............................................................................................................................. 6 Exploration and Inventory ........................................................................................................................................... 8 Fluvial Features and Processes ................................................................................................................................. 9 Geologic Hazards ....................................................................................................................................................... 9 Mining ....................................................................................................................................................................... 10 Surface-Subsurface Relationships ........................................................................................................................... 10 Geologic Features and Processes ............................................................................. 14 Backcountry Caves ................................................................................................................................................... 14 Cave Complexity and Levels .................................................................................................................................... 14 Lakes ........................................................................................................................................................................ 15 Paleokarst ................................................................................................................................................................ 15 Paleontological Resources ....................................................................................................................................... 16 Speleothems and Speleogens .................................................................................................................................. 18 Map Unit Properties .................................................................................................... 25 Map Unit Properties Table ........................................................................................................................................ 27 Geologic History.......................................................................................................... 29 Glossary ....................................................................................................................... 31 References ................................................................................................................... 34 Appendix A: Geologic Map Graphic .......................................................................... 38 Attachment 1: Geologic Resources Inventory Products CD WICA Geologic Resource Inventory Report iii Figures Figure 1. Cave Tour Map ............................................................................................................................................... 3 Figure 2. The Great Plains Physiographic Province ....................................................................................................... 4 Figure 3. Geologic Timescale......................................................................................................................................... 5 Figure 4. Footprint of Wind Cave ................................................................................................................................. 12 Figure 5. Cave Quadrangles ........................................................................................................................................ 13 Figure 6. Idealized Cross Section through the Pahasapa Limestone ........................................................................... 22 Figure 7. Rhinoceros Remains ..................................................................................................................................... 23 Figure 8. Boxwork ........................................................................................................................................................ 23 Figure 9. Frostwork ...................................................................................................................................................... 24 Figure 10. Helictite Bush .............................................................................................................................................. 24 iv NPS Geologic Resources Division Executive Summary This report accompanies the digital geologic map for Wind Cave National Park in South Dakota, which the Geologic Resources Division produced in collaboration with its partners. It contains information relevant to resource management and scientific research. This document incorporates preexisting geologic information and does not include new data or additional fieldwork. Wind Cave National Park is situated on the easternmost cave has been
Load more

Recommended publications
  • Junior Cave Scientist Cave and Karst Program Activity Book Ages 5 – 12+
    National Park Service U.S. Department of the Interior Geologic Resources Division Junior Cave Scientist Cave and Karst Program Activity Book Ages 5 – 12+ Name: Age: Explore • Learn • Protect 1 Become a Junior Cave Scientist Caves and karst landscapes are found throughout the United States. These features are important as part of our Nation's geologic heritage. In this book, you will explore a fascinating and fragile underground world, learn about the values of caves and karst landscapes, and complete fun educational activities. Explore magnificent and beautiful caves. You will find an amazing underground world just beneath your feet! Learn about caves and karst systems and the work that cave scientists do. Protect our natural environments and the things that make caves and karst areas special. To earn your badge, complete at least activities. (Your Age) Activities in this book are marked with an age indicator. Look for the symbols below: Flashlight Lantern Helmet and Headlamp Ages 5 - 7 Ages 8 – 11 Ages 12 and Older Put a check next to your age indicator on each page that you complete. I received this book from: After completing the activities, there are two ways to receive your Junior Cave Scientist badge: • Return the completed book to a ranger at a participating park, or 2 • Visit go.nps.gov/jrcavesci What are Speleo-Fact: Mammoth Cave is the longest cave in world with over 405 miles (652 km) of connected passageways. Caves and Karst? Caves are naturally occurring voids, cavities, interconnected passageways, or alcoves in the earth. Caves preserve fossils, minerals, ecosystems, and records of past climates.
    [Show full text]
  • Expedition Black Hills Option B1
    Medicine Mountain Scout Ranch 24201 Bobcat Road Custer, South Dakota 57730 Expedition: Black Hills Option B1 - 3 Day Program Destinations Include: • Mammoth Site • Black Elk Peak (Formerly Harney Peak) • Wind Cave National Park • Sylvan Lake • Mount Rushmore • Crazy Horse Memorial & Laser Light Show • 1880 Train • The Alpine Inn If after reading this overview, you have any questions, please contact our friendly team at 605-342-2824 or send an email to [email protected]. EXPEDITION: BLACK HILLS Key Info: Option Number B1 Tour Length Monday - Wednesday or Wednesday - Friday (3 days) Cost Per Person $380.00 (estimated - Call for exact pricing) Day 1 Destinations in this Option 6:45AM Breakfast in Campsite 8:00AM Depart Camp Mammoth Site 9:30AM Mammoth Site For centuries the bones lay buried, until 12:00PM Sack Lunch at Mammoth Site discovered by chance in 1974 during excavating 1:00PM Wind Cave National Park for a housing development, when earth moving 5:00PM Dinner in Campsite equipment exposed South Dakota’s greatest 7:00PM - 9:00PM Open Program at Camp fossil treasure. Fortunately, through the work of Day 2 local citizens, the Mammoth Site was preserved. 6:45AM Breakfast in Campsite Today it is the world’s largest Columbian 8:00AM Depart Camp mammoth exhibit, and a world-renown 9:00AM Mount Rushmore research center for Pleistocene. 12:00PM Sack Lunch at Mount Rushmore 1:15PM 1880 Train Wind Cave National Park 5:00PM Dinner in Campsite A hidden world beneath the prairie… 7:00PM - 9:00PM Open Program at Camp Bison, elk, and other wildlife roam the rolling Day 3 prairie grasslands and forested hillsides of one 6:45AM Breakfast in Campsite of America’s oldest national parks.
    [Show full text]
  • Living with Karst Booklet and Poster
    Publishing Partners AGI gratefully acknowledges the following organizations’ support for the Living with Karst booklet and poster. To order, contact AGI at www.agiweb.org or (703) 379-2480. National Speleological Society (with support from the National Speleological Foundation and the Richmond Area Speleological Society) American Cave Conservation Association (with support from the Charles Stewart Mott Foundation and a Section 319(h) Nonpoint Source Grant from the U.S. Environmental Protection Agency through the Kentucky Division of Water) Illinois Basin Consortium (Illinois, Indiana and Kentucky State Geological Surveys) National Park Service U.S. Bureau of Land Management USDA Forest Service U.S. Fish and Wildlife Service U.S. Geological Survey AGI Environmental Awareness Series, 4 A Fragile Foundation George Veni Harvey DuChene With a Foreword by Nicholas C. Crawford Philip E. LaMoreaux Christopher G. Groves George N. Huppert Ernst H. Kastning Rick Olson Betty J. Wheeler American Geological Institute in cooperation with National Speleological Society and American Cave Conservation Association, Illinois Basin Consortium National Park Service, U.S. Bureau of Land Management, USDA Forest Service U.S. Fish and Wildlife Service, U.S. Geological Survey ABOUT THE AUTHORS George Veni is a hydrogeologist and the owner of George Veni and Associates in San Antonio, TX. He has studied karst internationally for 25 years, serves as an adjunct professor at The University of Ernst H. Kastning is a professor of geology at Texas and Western Kentucky University, and chairs Radford University in Radford, VA. As a hydrogeolo- the Texas Speleological Survey and the National gist and geomorphologist, he has been actively Speleological Society’s Section of Cave Geology studying karst processes and cavern development for and Geography over 30 years in geographically diverse settings with an emphasis on structural control of groundwater Harvey R.
    [Show full text]
  • World Karst Science Reviews 141 Doi: 10.3897/Subtbiol.9.2518
    Subterranean Biology 9: 141-144, 2011 World karst science reviews 141 doi: 10.3897/subtbiol.9.2518 World karst science reviews Cave and Karst Science of British Cave Research Association Volume 38, (1), 2011 CONTENTS Ogof Draenen: an overview of its discovery and exploration Ben Lovett Landscape evolution in southeast Wales: evidence from aquifer geometry and surface topography associated with the Ogof Draenen cave system Michael J Simms and Andrew R Farrant On the occurrence and distribution of bats in Ogof Draenen Rhian Kendall and Tim Guilford The hydrogeology of Ogof Draenen: new insights into a complex multi-catchment karst system from tracer testing Lou Maurice and Tim Guilford Ogof Draenen: speleogenesis of a hydrological see-saw from the karst of South Wales Andrew R Farrant and Michael J Simms Cave and Karst Science of British Cave Research Association Volume 38, (2), 2011 CONTENTS Guano in Cango Cave, Oudtshoorn District, South Africa: an attempt at conservation that failed Stephen Craven Tenglong Dong and the caves of Lichuan County, Hubei, China Gerard Campion Limestone plateaus of the Yorkshire Dales glaciokarst Tony Waltham and Harry Long Monadnocks of the Mekong delta: character, caves and evolution Kevin Kiernan The aquatic macro-invertebrate fauna of Swildon’s Hole, Mendip Hills, Somerset, UK Lee Knight Human and faunal remains from Blue John Cavern, Castleton, Derbyshire, UK David Nixon 142 World karst science reviews International Journal of Speleology Of the International Union of Speleology Volume 40(1), 2011 CONTENTS Comparison of 14C and U-Th ages of two Holocene phreatic overgrowths on speleothems from Mallorca (Western Mediterranean).
    [Show full text]
  • Cultural Resources Overview Desert Peaks Complex of the Organ Mountains – Desert Peaks National Monument Doña Ana County, New Mexico
    Cultural Resources Overview Desert Peaks Complex of the Organ Mountains – Desert Peaks National Monument Doña Ana County, New Mexico Myles R. Miller, Lawrence L. Loendorf, Tim Graves, Mark Sechrist, Mark Willis, and Margaret Berrier Report submitted to the Wilderness Society Sacred Sites Research, Inc. July 18, 2017 Public Version This version of the Cultural Resources overview is intended for public distribution. Sensitive information on site locations, including maps and geographic coordinates, has been removed in accordance with State and Federal antiquities regulations. Executive Summary Since the passage of the National Historic Preservation Act (NHPA) in 1966, at least 50 cultural resource surveys or reviews have been conducted within the boundaries of the Desert Peaks Complex. These surveys were conducted under Sections 106 and 110 of the NHPA. More recently, local avocational archaeologists and supporters of the Organ Monument-Desert Peaks National Monument have recorded several significant rock art sites along Broad and Valles canyons. A review of site records on file at the New Mexico Historic Preservation Division and consultations with regional archaeologists compiled information on over 160 prehistoric and historic archaeological sites in the Desert Peaks Complex. Hundreds of additional sites have yet to be discovered and recorded throughout the complex. The known sites represent over 13,000 years of prehistory and history, from the first New World hunters who gazed at the nighttime stars to modern astronomers who studied the same stars while peering through telescopes on Magdalena Peak. Prehistoric sites in the complex include ancient hunting and gathering sites, earth oven pits where agave and yucca were baked for food and fermented mescal, pithouse and pueblo villages occupied by early farmers of the Southwest, quarry sites where materials for stone tools were obtained, and caves and shrines used for rituals and ceremonies.
    [Show full text]
  • Cave & Karst Resource Management Plan, Wind Cave National Park
    Cave & Karst Resource Management Plan, Wind Cave National Park 2007 Cave and Karst Resource Management Plan, Wind Cave National Park CAVE AND KARST RESOURCE MANAGEMENT PLAN WIND CAVE NATIONAL PARK March 2007 Recommended By: ___________________________________________________________________ Physical Science Specialist, Date: Wind Cave National Park Concurred By: ___________________________________________________________________ Chief of Resource Management, Date: Wind Cave National Park Approved By: ___________________________________________________________________ Superintendent, Wind Cave National Park Date: 2 Cave & Karst Resource Management Plan, Wind Cave National Park 2007 Cave and Karst Resource Management Plan, Wind Cave National Park Table of Contents I. BACKGROUND....................................................................................................................................................... 4 A. PARK PURPOSE ................................................................................................................................................... 4 B. GEOGRAPHIC LOCATION & DESCRIPTION OF THE PARK ..................................................................................... 4 C. PARK SIGNIFICANCE ............................................................................................................................................ 4 D. SURFACE LAND MANAGEMENT RELATIONSHIP TO KARST............................................................................... 10 II. CAVE AND KARST RESOURCE
    [Show full text]
  • Historical Variability in Fire at the Ponderosa Pine - Northern Great Plains Prairie Ecotone, Southeastern Black Hills, South Dakota1
    OSCIENCE 6(4):539-547(1999)6(4):539-547(1999) Historical variability in fire at the ponderosa pine - Northern Great Plains prairie ecotone, southeastern Black Hills, South Dakota1 Peter M. BROWN2, Rocky Mountain Tree-Ring Research, Inc., 2901 Moore Lane, Fort Collins, Colorado 80526, U.S.A., e-mail: [email protected] Carolyn H. SIEG, Rocky Mountain Research Station, South Dakota School of Mines and Technology Campus, 501 E. St. Joseph, Rapid City, South Dakota 57701, U.S.A. Abstract: Ecotones are boundaries between plant assemblages that can represent a physiological or competitive limit of species’ local distributions, usually through one or more biotic or abiotic constraints on species’ resource requirements. However, ecotones also result from the effects of chronic or episodic disturbances, and changes in disturbance regimes may have profound effects on vegetation patterns in transitional areas. In this study, centuries-long chronologies of surface fire events were reconstructed from fire-scarred ponderosa pine (Pinus ponderosa Dougl. ex Laws.) trees in three sites at the ecotone between ponderosa pine forest and Northern Great Plains mixed-grass prairie in the southeastern Black Hills of South Dakota. The fire chronologies provide baseline data to assess the possible role of fire in this transitional area and to document historical variability in fire regimes in this region of the Northern Great Plains. Regular fire events were recorded at all three sites from the beginning of the fire chronologies in the 1500s up to the late 1800s or early 1900s, at which time spreading fires ceased. Fire frequencies derived from the fire chronologies were compared to each other and to four sites from interior ponderosa pine forest in the south-central Black Hills.
    [Show full text]
  • Animacy, Symbolism, and Feathers from Mantle's Cave, Colorado By
    Animacy, Symbolism, and Feathers from Mantle's Cave, Colorado By Caitlin Ariel Sommer B.A., Connecticut College 2006 A thesis submitted to the Faculty of the Graduate School of the University of Colorado in partial fulfillment of the requirement for the degree of Master of Arts Department of Anthropology 2013 This thesis entitled: Animacy, Symbolism, and Feathers from Mantle’s Cave, Colorado Written by Caitlin Ariel Sommer Has been approved for the Department of Anthropology Dr. Stephen H. Lekson Dr. Catherine M. Cameron Sheila Rae Goff, NAGPRA Liaison, History Colorado Date__________ The final copy of this thesis has been examined by the signatories, and we Find that both the content and the form meet acceptable presentation standards Of scholarly work in the above mentioned discipline. Abstract Sommer, Caitlin Ariel, M.A. (Anthropology Department) Title: Animacy, Symbolism, and Feathers from Mantle’s Cave, Colorado Thesis directed by Dr. Stephen H. Lekson Rediscovered in the 1930s by the Mantle family, Mantle’s Cave contained excellently preserved feather bundles, a feather headdress, moccasins, a deer-scalp headdress, baskets, stone tools, and other perishable goods. From the start of excavations, Mantle’s Cave appeared to display influences from both Fremont and Ancestral Puebloan peoples, leading Burgh and Scoggin to determine that the cave was used by Fremont people displaying traits heavily influenced by Basketmaker peoples. Researchers have analyzed the baskets, cordage, and feather headdress in the hopes of obtaining both radiocarbon dates and clues as to which culture group used Mantle’s Cave. This thesis attempts to derive the cultural influence of the artifacts from Mantle’s Cave by analyzing the feathers.
    [Show full text]
  • Geologic Resources Inventory Report, Wind Cave National Park
    National Park Service U.S. Department of the Interior Natural Resource Program Center Wind Cave National Park Geologic Resources Inventory Report Natural Resource Report NPS/NRPC/GRD/NRR—2009/087 THIS PAGE: Calcite Rafts record former water levels at the Deep End a remote pool discovered in January 2009. ON THE COVER: On the Candlelight Tour Route in Wind Cave boxwork protrudes from the ceiling in the Council Chamber. NPS Photos: cover photo by Dan Austin, inside photo by Even Blackstock Wind Cave National Park Geologic Resources Inventory Report Natural Resource Report NPS/NRPC/GRD/NRR—2009/087 Geologic Resources Division Natural Resource Program Center P.O. Box 25287 Denver, Colorado 80225 March 2009 U.S. Department of the Interior National Park Service Natural Resource Program Center Denver, Colorado The Natural Resource Publication series addresses natural resource topics that are of interest and applicability to a broad readership in the National Park Service and to others in the management of natural resources, including the scientific community, the public, and the NPS conservation and environmental constituencies. Manuscripts are peer-reviewed to ensure that the information is scientifically credible, technically accurate, appropriately written for the intended audience, and is designed and published in a professional manner. Natural Resource Reports are the designated medium for disseminating high priority, current natural resource management information with managerial application. The series targets a general, diverse audience, and may contain NPS policy considerations or address sensitive issues of management applicability. Examples of the diverse array of reports published in this series include vital signs monitoring plans; "how to" resource management papers; proceedings of resource management workshops or conferences; annual reports of resource programs or divisions of the Natural Resource Program Center; resource action plans; fact sheets; and regularly-published newsletters.
    [Show full text]
  • Black Mn-Fe Crusts As Markers of Abrupt Palaeoenvironmental Changes in El Soplao Cave (Cantabria, Spain) Fernando Gázquez1, Jose Maria Calaforra1 and Paolo Forti2
    International Journal of Speleology 40 (2) 163-169 Tampa, FL (USA) July 2011 Available online at www.ijs.speleo.it & scholarcommons.usf.edu/ijs/ International Journal of Speleology Official Journal of Union Internationale de Spéléologie Black Mn-Fe crusts as markers of abrupt palaeoenvironmental changes in El Soplao Cave (Cantabria, Spain) Fernando Gázquez1, Jose Maria Calaforra1 and Paolo Forti2 Abstract: Fernando Gázquez F., Calaforra J. and Forti P. 2011. Black Mn-Fe crusts as palaeoenvironmental markers. International Journal of Speleology, 40 (2), 163-169. Tampa, FL (USA). ISSN 0392-6672. DOI 10.5038/1827-806X.40.2.8 Peculiar iron and manganese deposits coating walls, floors and ceilings of many galleries are one of the special features of the El Soplao Cave (Cantabria, Spain). These speleothems appear to have been deposited over wall clay deposits, as well as forming part of flowstones. Structure of crusts is essentially amorphous but several manganese and iron oxides were identified like goethite and birnessite, though all occur with a low degree of crystallinity. In the outer layer of the crusts, alteration iron minerals appear that derive from previous minerals in a process probably mediated by microorganisms. EDX microanalyses report fairly high values of Fe and Mn in the crusts, though the Mn/Fe ratio varies considerably as a function of distance from the substrate/bedrock. The present study proposes a genetic model for crust speleothems in El Soplao, based on oscillations of the phreatic level. The origin of these deposits is related to mobilization, under phreatic conditions, of polymetallic sulfides in the host rock.
    [Show full text]
  • Organic Matter of Fossil Origin in the Amberine Speleothems from El
    International Journal of Speleology 41 (1) 113-123 Tampa, FL (USA) January 2012 Available online at scholarcommons.usf.edu/ijs/ & www.ijs.speleo.it International Journal of Speleology Official Journal of Union Internationale de Spéléologie Organic matter of fossil origin in the amberine speleothems from El Soplao Cave (Cantabria, Northern Spain) Fernando Gázquez1, José-María Calaforra1*, Fernando Rull2, Paolo Forti3, and Antonio García-Casco4 Abstract: Gázquez F., Calaforra J.-M., Rull F., Forti P. and García-Casco A. 2012. Organic matter of fossil origin in the amberine speleothems from El Soplao Cave (Cantabria, Northern Spain). International Journal of Speleology, 41(1), 113-123. Tampa, FL (USA). ISSN 0392- 6672. DOI: http://dx.doi.org/10.5038/1827-806X.41.1.12 Unusual amberine-coloured speleothems were recently found in El Soplao Cave (Cantabria, Spain). Chromophore elements such as Fe, Mn, Cd, Co or Ti were not present in significant quantities. Rather, our data show that their colour comes from leachates of fossilized organic material hosted in the carbonaceous Urgonian facies of the host rock. These leachates are related to the Cretaceous amber deposit that has been recently discovered in the vicinity of El Soplao Cave. The presence of humic and fulvic acids of fossil origin were confirmed by IR and Raman spectroscopic analysis of the carbonaceous strata and the speleothems. In addition, the mineralogy of the amberine speleothems was studied. Alternating bands made of calcite and aragonite reveal that periods of humidity and aridity occurred within the cave during the speleothem genesis. Keywords: speleothems; infrared spectroscopy; organic matter; Raman spectroscopy; El Soplao Cave Received 14 November 2011; Revised 18 December 2011; Accepted 21 December 2011 INTRODUCTION et al., 1993; Shopov et al., 1994; Baker et al., 1996; The presence of organic compounds within White, 1997; van Beynen et al., 2001; Shopov, 2004; speleothems has revealed a new pool of climate proxies Crowell & White, 2012).
    [Show full text]
  • Download PDF About Minerals Sorted by Mineral Group
    MINERALS SORTED BY MINERAL GROUP Most minerals are chemically classified as native elements, sulfides, sulfates, oxides, silicates, carbonates, phosphates, halides, nitrates, tungstates, molybdates, arsenates, or vanadates. More information on and photographs of these minerals in Kentucky is available in the book “Rocks and Minerals of Kentucky” (Anderson, 1994). NATIVE ELEMENTS (DIAMOND, SULFUR, GOLD) Native elements are minerals composed of only one element, such as copper, sulfur, gold, silver, and diamond. They are not common in Kentucky, but are mentioned because of their appeal to collectors. DIAMOND Crystal system: isometric. Cleavage: perfect octahedral. Color: colorless, pale shades of yellow, orange, or blue. Hardness: 10. Specific gravity: 3.5. Uses: jewelry, saws, polishing equipment. Diamond, the hardest of any naturally formed mineral, is also highly refractive, causing light to be split into a spectrum of colors commonly called play of colors. Because of its high specific gravity, it is easily concentrated in alluvial gravels, where it can be mined. This is one of the main mining methods used in South Africa, where most of the world's diamonds originate. The source rock of diamonds is the igneous rock kimberlite, also referred to as diamond pipe. A nongem variety of diamond is called bort. Kentucky has kimberlites in Elliott County in eastern Kentucky and Crittenden and Livingston Counties in western Kentucky, but no diamonds have ever been discovered in or authenticated from these rocks. A diamond was found in Adair County, but it was determined to have been brought in from somewhere else. SULFUR Crystal system: orthorhombic. Fracture: uneven. Color: yellow. Hardness 1 to 2.
    [Show full text]