Petroglyphs 2021-06
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June/July 2021 West Seattle Petroglyphs Page 1 Volume 56, Number 6 Monthly Bulletin of the West Seattle Rock Club, Inc. Seattle, Washington Website: http://www.westseattlerockclub.org Our Club: Practices the Rockhound Code of Ethics Meetings: Visitors are always welcome! WEST SEATTLE PETROGLYPHS Mike Wall, Editor 5406 46th Ave SW Seattle, WA 98136 email: [email protected] June/July 2021 Pearls & Ruby June/July 2021 West Seattle Petroglyphs Page 2 WEST SEATTLE ROCK CLUB, INC. email Address: [email protected] The purpose of this Club is to promote the study and enjoyment of the Lapidary Arts with good Rock- hounding and good fellowship; and to further education and lapidary skills for all; to conduct field trips for exploration and collection of minerals, gems, rocks and fossils; to promote shows and displays; to publish a monthly periodical known as West Seattle PETROGLY PHS relating to club activities. **************************************************************************************** OFFICERS AND BOARD OF DIRECTORS (2021—Carried over from 2020): President Brooke Babcock (360) 305-8106 Vice President Annette Nelson (206) 379-3677 Secretary Sue Fox (206) 605-4666 Treasurer Audrey Vogelpohl (206) 932-3292 Federation Director Audrey Vogelpohl 206) 932-3292 Director at Large Ken Schmidt (206) 932-3626 Mineral Council Reps Rich Babcock (206) 326-8951 Newsletter - Editor Mike Wall (206) 476-6471 Current Past President Scott Ryan (206) 354-2101 **************************************************************************************** COMMITTEE CHAIRPERSONS (2021—Carried over from 2020): Show Co-Chairs (2020 show) Sue Fox (206) 835-0774 Annette Nelson (206) 379-3677 Programs <Vice President> <Vice President> Refreshments/Hospitality Sue Fox (206) 835-0774 Membership Mary Bentler (206) 932-6108 Historian Audrey Vogelpohl (206) 932-3292 Library Chair Erin Thompson (253) 307-1589 Field Trips Rich Babcock (206) 326-8951 Webmaster Annette Nelson (206) 379-3677 Junior Advisor Scott Smith (630) 229-1182 **************************************************************************************** AFFILIATED WITH: Northwest Federation & American Federation of Mineralogical Societies Seattle Regional Gem and Mineral Show Committee Washington State Mineral Council ALAA – American Lands Access Association **************************************************************************************** Meetings are held on the Fourth Wednesday of each month, except for November which can be on the THIRD or FOURTH Wednesday depending on Thanksgiving and no meetings in July and December The meetings are held in Adams Hall of the Tibbetts United Methodist Church 3940 41st S.W. (corner of 41st S.W. and S.W. Andover Street) Seattle, WA 6:15 PM – Junior Meeting 7:00 PM – Adult Meeting Dues are: $20.00 first year (including name badge), then: $10.00 per adult member per year or $15.00 for 2 adults in same family, $3.00 per junior member per year (If you paid 2020 dues they are carried forward for 2021 as well.) VISITORS ARE INVITED AND ARE ALWAYS WELCOME TO ALL MEETINGS All material in this Bulletin may be reprinted if properly credited - Exchange Bulletins are most welcome. June/July 2021 West Seattle Petroglyphs Page 3 CLUB Hamburgers, hot dogs and the fixings will CALENDAR be provided by the club. Please bring a side dish of your choice to share and your own drinks. Also bring a chair or blanket June 23, 2021 to sit on. … And most importantly bring some nice General Meeting (7:00 pm) - Virtual Only rocks and cash for the not-so-silent auction. Program— Identifying Igneous Rocks Bring plenty of cash you don’t want to lose out on one of those precious gems. There Show-n-Tell— Something Blue will also be a few items that will be for Note: Zoom meeting will end promptly at kids only. 7:40, so make sure you are there at 7:00 so we can start on time. WHAT’S July 28, 2021 INSIDE WSRC Picnic — Starts at 5:30 pm — see details below. Club Calendar 3 (Hope to see everyone there!) President’s Message 3 2021 WSRC Picnic 3 What’s Inside 3 PRESIDENT’S WSRC General Meeting Minutes - MESSAGE May Virtual Meeting 4 Scientists Study the Not-so-Sweet (But Interesting) Sixteen 4 (Not Available The Different Types of Chalcedony 5 at Press Time) A Clue in Predicting Tsunamis 7 Colors From Around the World 2021 WSRC PICNIC Series—Part 1 8 Our July Picnic will be at Me-Kwa-Mooks 2021 Refreshments (On Hold) 9 park on July 28th at 5:30 pm. Shop Tips 9 Address: 4503 Beach Dr. SW. Seattle 2021 Field Trips 10 This will be our first in person get together for about 1 1/2 years, so make sure you 2021 Shows 10 mark this on your calendars right now. June/July 2021 West Seattle Petroglyphs Page 4 WEST SEATTLE ROCK CLUB – GENERAL MEETING MINUTES May 26, 2021 Zoom Meeting Meeting was cancelled—no minutes.. is politically and physically accessible for study; SCIENTISTS STUDY THE and there is local support for the work.” Two of the Decade Volcanoes are in the U.S.! (. .Yay?) NOT-SO-SWEET (BUT The 16 are: INTERESTING) SIXTEEN 1. Avachinsky-Koryatsky on the Kamchatka Peninsula in Russia. It’s near Petropavlovsk, the By Valerie J. Meyers, largest city on the peninsula. Show-Me Rockhounds of Kansas City 2. Colima, the largest and most active of a range Mt. Etna erupted recently with showers of rock and of volcanoes called the Colima Volcanic clouds of gas that briefly closed the airport in Complex, straddles the border of Jalisco and Catania, Italy. Etna is one of the Decade Volcanoes – Colima states in Mexico. It threatens cities in also known as the Decade Sixteen – that are closely both states; in 2016, an eruption forced the studied by scientists. They were identified in 1990 by evacuations of four towns. the International Association of Volcanology and Chemistry of the Earth’s Interior as part of the United 3. Galeras Nariño in Colombia. About 8,000 Nations’ International Decade for Natural Disaster people live in several towns near the volcano. Reduction, because these are volcanoes that are Galeras Nariño is notorious among active, have a history of destructive eruptions, and are volcanologists because it erupted without located close to populous areas. warning in 1993. Six scientists who’d been attending a volcanology conference and three tourists were caught in the crater and killed. 4. Mauna Loa in the USA. It’s near Hilo, the largest city on the Big Island of Hawaii. 5. Mount Etna in Italy, near the city of Catania and several small towns. 6. Mount Merapi in Central Java, Indonesia. The island of Java is densely populated; an eruption less than a month ago forced the evacuation of 2,000 residents near the volcano. 7. Mount Nyiragonga in the Democratic Republic of the Congo. It’s near the towns of Goma in DRC and Gisenyi in Rwanda. Mt. Etna erupts near the U.S. Naval Air Station at Sigonella in Italy. Photo from twitter.com/US 8. Mount Rainier in Washington State, USA. Navy, via Wikimedia Commons. Small towns cluster around Mount Rainier National Park, and all of Pierce County could be According to Wikipedia, each of those 16 volcanoes affected by an eruption. met other criteria besides recent activity and nearness to populated areas. Each was also chosen if it 9. Mount Vesuvius in the state of Campania, “exhibits more than one volcanic hazard (people Italy. It’s less than 14 miles from Naples. living near the Decade Volcanoes may experience tephra fall, pyroclastic flows, lava flows, lahars, 10. Mount Unzen in Japan. It’s near Shimabara, a volcanic edifice instability and lava dome collapse); . (Continued on page 5) June/July 2021 West Seattle Petroglyphs Page 5 (Continued from page 4) arrowheads, spearheads, scrapers and other tools that need a very, very sharp edge. Flint can be chipped town of 45,000 in the Nagasaki Prefecture. into very sharp edges in a process that is known as “flint knapping.” (Below: Flint from Ohio. James St. 11. Sakurajima in Japan. It is actually within the John) city limits of Kagoshima, a city of 595,000. 12. Santa Maria in Guatemala. It’s near Quetzaltenango, a city of 180,000, and several smaller towns. 13. Santorini in Greece. The island has a population of 15,000, and is a popular tourist destination. 14. Taal Volcano in the Philippines. There are several towns on the island, although the Filipino government has declared it a permanent danger zone and strongly discourages people from living there. An eruption in January 2020 buried the area in ash, forcing evacuations and complete lockdowns of four towns. This past February, the Jasper - Jasper is red or yellow chalcedony that is Philippine Institute of Volcanology and similar to flint, but is much more colorful. Sometimes Seismology reported 98 tremors in 24 hours, jasper specimens can be red and yellow in the same prompting evacuations again. On April 10-11, the specimen. Jasper tends to have a waxy luster. Below Institute recorded 200-plus tremors and quakes as you will read about carnelian which is also red, but it Taal spewed more than 2,000 tons of gas is more glassy. (Below: Polished Jasper. Public emission. Domain.) 15. Teide in the Canary Islands, Spain. It is near several large towns, and the Canary Islands are popular with tourists. 16. Ulawun in Papua New Guinea. About 4,000 residents of several small towns were evacuated when Ulawun erupted in 2000. Sources: Wikipedia, “Decade Volcanoes”; Worldatlas.com; Volcanodiscov-ery.com; Manila- times.net (via AFMS Newsletter, June 2021; via MWF Newsletter, April 2021; via Crinoid Courier, March 2021) Chrysoprase - Chrysoprase is a beautiful, apple-green variety of chalcedony. It can be polished to a very THE DIFFERENT TYPES glassy finish which helps make its bright color very strong. (Below: Chrysoprase. James St. John ) OF CHALCEDONY There are many different types of chalcedony.