DOCSLIB.ORG

Exploration Tools for Linked Porphyry and Epithermal Deposits: Example from the Mankayan Intrusion-Centered Cu-Au District, Luzon, Philippines*

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Exploration Tools for Linked Porphyry and Epithermal Deposits: Example from the Mankayan Intrusion-Centered Cu-Au District, Luzon, Philippines* Economic Geology, v. 106, pp. 1365–1398 Exploration Tools for Linked Porphyry and Epithermal Deposits: Example from the Mankayan Intrusion-Centered Cu-Au District, Luzon, Philippines* ZHAOSHAN CHANG,1,†,** JEFFREY W. HEDENQUIST,2 NOEL C. WHITE,3 DAVID R. COOKE,1 MICHAEL ROACH,1 CARI L. DEYELL,1 JOEY GARCIA, JR., 4,** J. BRUCE GEMMELL,1 STAFFORD MCKNIGHT,5 AND ANA LIZA CUISON4,*** 1 CODES ARC Centre of Excellence in Ore Deposits, University of Tasmania, Private Bag 126, Hobart, Tasmania 7001, Australia 2 99 Fifth Avenue-Suite 260, Ottawa, Ontario, Canada K1S5P5 3 P.O. Box 5181, Kenmore East, Queensland 4069, Australia 4 Lepanto Consolidated Mining Company, 21st Fl., BA-Lepanto Bldg., 8747 Paseo de Roxas, 1126, Makati City, Philippines 5 Geology and Metallurgy, School of Science and Engineering, University of Ballarat, P.O. Box 663, Ballarat VIC 3353, Australia Abstract The Mankayan mineral district of northern Luzon, Philippines, hosts several significant ore deposits and prospects of various types within an area of ~25 km2, including the Far Southeast porphyry Cu-Au deposit, the Lepanto high sulfidation epithermal Cu-Au deposit, the Victoria intermediate sulfidation epithermal Au-Ag vein deposit, the Teresa epithermal Au-Ag vein deposit, the Guinaoang porphyry Cu-Au deposit, and the Buaki and Palidan porphyry Cu-Au prospects, all having formed in a period of about 2 m.y., from ~3 Ma. The geo- logic units include (1) a basement composed of Late Cretaceous to middle Miocene metavolcanic rocks and volcaniclastic rocks; (2) the Miocene 12 to 13 Ma tonalitic Bagon intrusive complex; (3) the Pliocene, ~2.2 to 1.8 Ma, Imbanguila dacite porphyry and pyroclastic rocks; and (4) postmineralization cover rocks, including the ~1.2 to 1.0 Ma Bato dacite porphyry and pyroclastic rocks and the ~0.02 Ma Lapangan tuff. Extensive advanced argillic alteration crops out for ~7 km along the unconformity between the basement rocks and the Imbanguila dacite formation and consists of quartz-alunite ± pyrophyllite or diaspore, with local zones of silicic alteration and a halo of dickite ± kaolinite. The alteration and its subhorizontal geometry indi- cate that it is a lithocap or coalesced lithocaps. The northwest-striking portion is ~4 km long and hosts the Lepanto enargite Au ore deposit, also controlled by the Lepanto fault. The Lepanto epithermal deposit is related to the underlying Far Southeast porphyry; the quartz-alunite alteration halo of Lepanto is contempo- raneous with the ~1.4 Ma potassic alteration of the porphyry. There are also silicic-advanced argillic alteration patches ~600 m above the Far Southeast orebody at the present surface; these are interpreted to be perched alteration. There is no systematic mineralogical or textural zoning in the Lepanto lithocap that indicates direc- tion to the intrusive source. Most surface samples of the lithocap contain less than 50 ppb Au, despite many being less than a few hundred meters from underground Cu-Au ore. This study found that several characteristics of the Lepanto lithocap change systematically with distance from the causative intrusion: The alunite absorption peak at ~1,480 nm in the short wavelength infrared (SWIR) spectrum shifts to higher wavelengths where the sample is closer to the intrusive center, due to higher Na and lower K content in the alunite; published experimental studies indicate that high Na/(Na + K) is related to higher formation temperature. High Ca alunite, including huangite, also occurs at locations proximal to the intrusive center. Alunite mineral composition analyzed by laser ablation-inductively coupled plasma-mass spec- trometry (LA-ICP-MS) indicates that the Pb content decreases toward the intrusive center, whereas Sr, La, Sr/Pb, and La/Pb increase markedly. Whole-rock compositions, using only nonmineralized (taken as Cu <0.1wt % and Au <0.1 ppm) and alunite-bearing samples, show that Pb and Ag/Au, plus Hg and Ag, decrease toward the intrusive center, and Sr/Pb and La/Pb ratios increase. Normalizing whole-rock Pb to the (Na + K) molal content produces a proxy for the alunite mineral composition, and this ratio provides the same indications as the LA-ICP-MS analyses of alunite. The concealed Victoria epithermal veins consist of intermediate sulfida- tion mineralization on the southwest flank of the porphyry. The veins are not exposed, but their presence at depth is indicated by subtle alteration (illite or interstratified illite and/or smectite or smectite + pyrite) and geochemical (As, Se) anomalies at the surface. The anomalies are strongly dependent on erosion level; no anomalies were found where the surface is >~350 m above the upper extent of the veins. An airborne geo- physics survey indicates that the Far Southeast orebody is associated with a wide zone of demagnetization due to extensive magnetite-destructive phyllic alteration. Such low magnetic anomalies on the margin of a large lithocap elsewhere may deserve attention. The directional indicators and mineralization signatures found in this study have the potential to indicate direction to the intrusive center during exploration of similar porphyry- epithermal districts. † Corresponding author: e-mail, [email protected] *A digital supplement to this paper is available at <http://economicgeology.org/> **Current address: School of Earth and Environmental Sciences, James Cook University, Townsville, QLD 4811, Australia. ***Current address: CODES ARC Centre of Excellence in Ore Deposits, University of Tasmania, Private Bag 126, Hobart, Tasmania 7001, Australia. © 2011 Gold Open Access: this paper is published under the terms of the CC-BY license. 0361-0128/11/3995/1365-34 1365 Downloaded from http://pubs.geoscienceworld.org/segweb/economicgeology/article-pdf/106/8/1365/3968435/1365-1398.pdf by guest on 23 September 2021 1366 CHANG ET AL. Introduction such deposits (e.g., Sillitoe and Hedenquist, 2003; Sillitoe, LITHOCAPS are horizontal to subhorizontal blankets of resid- 2010) and evidence for transitions between them (e.g., Ein- ual quartz and advanced argillic alteration of hypogene origin, audi et al., 2003). occurring over intrusions (Sillitoe, 1995a). They can host high Discovery histories of ore deposits in the district sulfidation epithermal mineralization, particularly within their fracture-controlled roots. Lithocaps are temporally and The Lepanto enargite Au orebody was worked for Cu and th genetically related to intrusions that may be associated with Au at the start of the Ming dynasty (14 century), and by the deeper porphyry-style mineralization (Sillitoe, 1995a, 1999, local people prior to the 1500s, after which the Spanish be- 2011; Hedenquist et al., 1998). Lithocaps can have large areal came involved. Outcrops consisting of vuggy to massive extent (>20 km2; Sillitoe, 1995a) and, because they resist ero- quartz along the Lepanto fault were first mined near the sion, are typically prominent at the surface, which generally 1,150-m-elevation level, with luzonite-enargite still visible in makes them easy to find. The presence of a lithocap of large the old workings in the cliff face (Lepanto is the type locality areal extent (A. Arribas, pers. commun., 1999) is encouraging for luzonite). The Cantabro-Filipino company was the first to for exploration at an early stage, as it indicates extensive hy- conduct large-scale mining in 1865, with at least 1,100 metric drothermal activity and potential for high sulfidation ore; in tons (t) of Cu produced during a 10-year period. The present addition, there is potential for deeper porphyry and marginal underground mining activity dates from 1936, when the Lep- epithermal vein mineralization. Despite the relative ease of anto Consolidated Mining Co. commenced mining until the finding lithocaps, it may be difficult to further define the loca- Japanese took over production; Mitsui produced 11,000 t of tion of mineralization within, under, or adjacent to a large Cu during the early 1940s. Lepanto Consolidated Mining Co. lithocap due to the lack of directional indicators. In particular, resumed mining in 1948, and up to 1996 a total of 36.3 Mt of determining the position of the underlying intrusive center is ore was produced from the Lepanto mine at an average grade commonly difficult. In addition, veins on the margin may ter- of 2.9 percent Cu, 3.4 g/t Au, and 14 g/t Ag, with a total of minate several hundred meters below the paleosurface, 0.74 Mt Cu, 92 t Au, and 393 t Ag recovered. The Lepanto below the level of the lithocap. In a district without outcrop- mine closed in 1996 with a remaining minable reserve of 4.4 ping veins, exploration for such veins is typically difficult. Mt at 1.76 wt percent Cu and 2.4 g/t Au (Claveria et al., The Mankayan mineral district, northern Luzon, Philip- 1999a). pines, was studied in order to develop tools for exploration in The Far Southeast porphyry was discovered in 1980, based such districts, as it is the site of several large intrusion-related in part on the prediction that Lepanto was sitting over a por- ore deposits and prospects. The district lies within a well-de- phyry environment (Sillitoe, 1983). Porphyry fragments at the fined, 150-km-long belt of porphyry Cu deposits in the Cen- surface were recognized by Lepanto geologists in outcrops of tral Cordillera of northern Luzon (e.g., Cooke et al., 2011; Imbanguila dacite volcanic products in the 1970s. In 1978, Deyell and Hedenquist, 2011; Hollings et al., 2011a, b; Wa- the deeper parts of two drill holes, drilled in 1974 about 4 km ters et al., 2011; Wolfe and Cooke, 2011). It is one of the southeast of Lepanto, were recognized to contain porphyry- country’s richest mining districts, both in terms of proven and type mineralization; subsequent reassay in mid-1980 identi- potential economic value as well as abundance and diversity fied “appreciable Cu values” (Sillitoe, 1995b, p.
Load more

Recommended publications
  • Baguio Mineral District
    BAGUIO MINERAL DISTRICT THE BAGUIO MINERAL DISTRICT, A GIANT MULTI‐EPISODIC Baguio Gold Itogon Acupan Antamok Danglay Padcal CLUSTERED COPPER‐GOLD SYSTEM Keystone Ampucao Atok, Kelly Chico Nugget Hill Baguio Tom Malihan Manila (Exploration Manager, Benguet Corporation) Nonoy Ruelo (Consultant, Indophil Itogon Mineral Resources Inc.) Looking south, from Mines View Park Benguet province Telescoped porphyry copper system – diverse genetically related deposit styles Baguio Mineral District AA Lithocap IS Epithermal gold Porphyry copper Skarn gold/base metal Sillitoe 2010 Epithermal IS Porphyry copper Geologic Resource /Potential = +40 Moz Au and +5 Mt Cu Skarn GOLD million ounces (Moz) hosts 3 giant deposits Geologic Resource /Potential = +40 Moz Au and +5 Mt Cu Sto. Tomas II porphyry copper = +20 Moz Au eq Rank Deposit Name Deposit Type Moz Au Eq 1 Grasberg Porphyry copper-gold 186.0 COPPER million tonnes (Mt) ranked 14th 2 Bingham Canyon Porphyry copper-moly-gold 131.0 3 Escondida Porphyry copper-gold 133.2 largest in the 4 Oyu Tolgoi Porphyry copper-gold-moly 115.4 5 Kalmakyr Porphyry copper-gold 64.5 world 6 Panguna Porphyry copper-gold 61.5 7 Atlas Porphyry copper-gold 53.5 8 Far Southeast Porphyry copper-gold 50.4 9 Collahuasi Porphyry copper 43.1 10 Batu Hijau Porphyry copper-gold 40.9 11 Sipalay Porphyry copper-gold 33.3 12 Bajo de la Alumbrera Porphyry copper-gold 36. 2 13 Ok Tedi Porphyry / Skarn copper-gold 29.1 14 Sto. Tomas II (Philex) Porphyry copper-gold 20.3 Acupan-Itogon epithermal vein/breccia = +17 Moz Au Antamok epithermal
    [Show full text]
  • 2019 Iiee Northern Luzon Region Return to Sender
    2019 IIEE NORTHERN LUZON REGION RETURN TO SENDER STATUS firstName middleName lastName EDITED ADDRESS chapterName RTS UNKNOWN ADDRESS Raymond Domondon Abata Macaycayawan Pangasinan Baguio Benguet RTS UNKNOWN ADDRESS GERALD ARBOLEDA ABELLERA 54 PUROK 8 BAKAKENG NORTE BAGUIO CITY BENGUET 2600 Baguio Benguet RTS UNKNOWN ADDRESS Randy Pale ABIGON DELOS REYES ST OUTLOOK DRIVE BAGUIO BENGUET Baguio Benguet RTS UNKNOWN ADDRESS JACKSON ADDUCUL ACHANZAR BLK 6 LOT 13 MT IBA ST ALTA MONTE GREENS EXEC VILLAGE BRGY DOLORES TAYTAY, RIZAL METRO MANILA 1920 CKAB RTS UNKNOWN ADDRESS PAUL SEVERO AFIDCHAO 70 LITENG PACDAL BAGUIO CITY Baguio Benguet RTS UNKNOWN ADDRESS Brian Esteban AGATEP #14 Santo Tomas Street San Gabriel Tuguegarao city Cagayan 3500 CKAB RTS INSUFFICIENT ADDRESS EDILBERTO CLIFFORD QUEVEDO AGUSTIN 41 TUGUEGARAO CAGAYAN CKAB RTS UNKNOWN ADDRESS Satur Waclin AHUCOT PUROK 4 OUTLOOK DRIVE BAGUIO BENGUET 2600 Baguio Benguet RTS INSUFFICIENT ADDRESS HANS GEOFFREY DOKIPEN ALANGDEO 1015 KM6 BETAG LA TRINIDAD BENGUET Baguio Benguet RTS INSUFFICIENT ADDRESS ORLANDO REPOTULA ALBIENTO ALAPANG LA TRINIDAD BENGUET Baguio Benguet RTS NO RECIEVER JIM BALIWAN ALONZO 348 KM 6 DONTOGAN STO TOMAS ROAD BAGUIO CITY BENGUET Baguio Benguet RTS UNKNOWN ADDRESS OSCAR GRAY-COCHEA ANCHETA 424-D Camp 7 Baguio City Benguet Baguio Benguet RTS INSUFFICIENT ADDRESS CARLO JOEL DIRECTO ANDRES ALAPANG LA TRINIDAD BAGUIO-BENGUET Baguio Benguet RTS UNKNOWN ADDRESS Carl Joshua Fernando ANDRES STA ESCOLASTICA BAGUIO CITY BENGUET 2600 Baguio Benguet RTS INSUFFICIENT ADDRESS Francis Paolo Bueno ASIROT Baguio Benguet RTS NO RECIEVER ARTEMIO MALICDAN BACOCO 353 BALSIGAN BAGUIO BENGUET Baguio Benguet RTS MOVED OUT VANESA GATAN BAGCAL 31A CROSLEY LANE LIBERTY SUBD CUPANG MUNTINLUPA CITY Isabela-Quirino RTS UNKNOWN ADDRESS EUSEBIO DOMOGUEN BAGSAN, JR.
    [Show full text]
  • Municipality of La Trinidad BARANGAY LUBAS
    Republic of the Philippines Province of Benguet Municipality of La Trinidad BARANGAY LUBAS PHYSICAL AND SOCIO-ECONOMIC PROFILE I. PHYSICAL PROFILE Geographic Location Barangay Lubas is located on the southern part of the municipality of La Trinidad. It is bounded on the north by Barangay Tawang and Shilan, to the south by Barangay Ambiong and Balili, to the east by Barangay Shilan, Beckel and Ambiong and to the west by Barangay Tawang and Balili. With the rest of the municipality of La Trinidad, it lies at 16°46’ north latitude and 120° 59 east longitudes. Cordillera Administrative Region MANKAYAN Apayao BAKUN BUGUIAS KIBUNGAN LA TRINIDAD Abra Kalinga KAPANGAN KABAYAN ATOK TUBLAY Mt. Province BOKOD Ifugao BAGUIO CITY Benguet ITOGON TUBA Philippines Benguet Province 1 Sally Republic of the Philippines Province of Benguet Municipality of La Trinidad BARANGAY LUBAS POLITICAL MAP OF BARANGAY LUBAS Not to Scale 2 Sally Republic of the Philippines Province of Benguet Municipality of La Trinidad BARANGAY LUBAS Barangay Tawang Barangay Shilan Barangay Beckel Barangay Balili Barangay Ambiong Prepared by: MPDO La Trinidad under CBMS project, 2013 Land Area The Department of Environment and Natural Resources (DENR) Cadastral survey reveals that the land area of Lubas is 240.5940 hectares. It is the 5th to the smallest barangays in the municipality occupying three percent (3%) of the total land area of La Trinidad. Political Subdivisions The barangay is composed of six sitios namely Rocky Side 1, Rocky Side 2, Inselbeg, Lubas Proper, Pipingew and Guitley. Guitley is the farthest and the highest part of Lubas, connected with the boundaries of Beckel and Ambiong.
    [Show full text]
  • CORDILLERA ADMINISTRATIVE REGION (CAR) Directory Mines and Quarries, CY 2020
    MINES AND GEOSCIENCES BUREAU REGIONAL OFFICE NO.: CORDILLERA ADMINISTRATIVE REGION (CAR) Directory Mines and Quarries, CY 2020 Region Mineral Province Municipality/City Commodity Permit Holder Operator Managing Official CAR Metallic ABRA Baay-Licuan Gold, Silver Jabel Corporation Jabel Corporation James Beloy/President CAR Metallic ABRA Baay-Licuan Gold, Copper, etc Jabel Corporation Jabel Corporation James Beloy/President Tuffaceous, Limestone, CAR Non-Metallic ABRA Bucay Abra Mining and Industrial Corporation Abra Mining and Industrial Corporation James Beloy/President Silica Sand CAR Non-Metallic APAYAO Sta Marcela Sand and Gravel Rodrigo Romero Rodrigo Romero Rodrigo Romero CAR Non-Metallic APAYAO Flora Sand and Gravel Luia Madriaga Luia Madriaga Luia Madriaga CAR Non-Metallic APAYAO Sta Marcela Sand and Gravel Erickson A. Yadao Erickson A. Yadao Erickson A. Yadao CAR Non-Metallic APAYAO Luna Sand and Gravel Armando G. Menor Armando G. Menor Armando G. Menor CAR Non-Metallic APAYAO Pudtol Sand and Gravel Dante Queza Dante Queza Dante Queza CAR Non-Metallic APAYAO Calanasan Sand and Gravel Gerry Andres Gerry Andres Gerry Andres CAR Non-Metallic APAYAO Pudtol Sand and Gravel John Val Sagisi John Val Sagisi John Val Sagisi CAR Non-Metallic APAYAO Sta Marcela Sand and Gravel Joe B. Guillermo Joe B. Guillermo Joe B. Guillermo CAR Non-Metallic APAYAO Flora Sand and Gravel Rogelio Cardenas Rogelio Cardenas Rogelio Cardenas CAR Non-Metallic APAYAO Conner Sand and Gravel Joel Fernando Joel Fernando Joel Fernando CAR Non-Metallic APAYAO Pudtol Sand and Gravel Joaquin Pascua Joaquin Pascua Joaquin Pascua CAR Non-Metallic APAYAO Sta Marcela Sand and Gravel Jomari Alawin Jomari Alawin Jomari Alawin CAR Non-Metallic APAYAO Conner Sand and Gravel Reynobel Baguec Reynobel Baguec Reynobel Baguec CAR Metallic BENGUET Itogon Gold Atok Gold Resources, Inc.
    [Show full text]
  • 2015Suspension 2008Registere
    LIST OF SEC REGISTERED CORPORATIONS FY 2008 WHICH FAILED TO SUBMIT FS AND GIS FOR PERIOD 2009 TO 2013 Date SEC Number Company Name Registered 1 CN200808877 "CASTLESPRING ELDERLY & SENIOR CITIZEN ASSOCIATION (CESCA)," INC. 06/11/2008 2 CS200719335 "GO" GENERICS SUPERDRUG INC. 01/30/2008 3 CS200802980 "JUST US" INDUSTRIAL & CONSTRUCTION SERVICES INC. 02/28/2008 4 CN200812088 "KABAGANG" NI DOC LOUIE CHUA INC. 08/05/2008 5 CN200803880 #1-PROBINSYANG MAUNLAD SANDIGAN NG BAYAN (#1-PRO-MASA NG 03/12/2008 6 CN200831927 (CEAG) CARCAR EMERGENCY ASSISTANCE GROUP RESCUE UNIT, INC. 12/10/2008 CN200830435 (D'EXTRA TOURS) DO EXCEL XENOS TEAM RIDERS ASSOCIATION AND TRACK 11/11/2008 7 OVER UNITED ROADS OR SEAS INC. 8 CN200804630 (MAZBDA) MARAGONDONZAPOTE BUS DRIVERS ASSN. INC. 03/28/2008 9 CN200813013 *CASTULE URBAN POOR ASSOCIATION INC. 08/28/2008 10 CS200830445 1 MORE ENTERTAINMENT INC. 11/12/2008 11 CN200811216 1 TULONG AT AGAPAY SA KABATAAN INC. 07/17/2008 12 CN200815933 1004 SHALOM METHODIST CHURCH, INC. 10/10/2008 13 CS200804199 1129 GOLDEN BRIDGE INTL INC. 03/19/2008 14 CS200809641 12-STAR REALTY DEVELOPMENT CORP. 06/24/2008 15 CS200828395 138 YE SEN FA INC. 07/07/2008 16 CN200801915 13TH CLUB OF ANTIPOLO INC. 02/11/2008 17 CS200818390 1415 GROUP, INC. 11/25/2008 18 CN200805092 15 LUCKY STARS OFW ASSOCIATION INC. 04/04/2008 19 CS200807505 153 METALS & MINING CORP. 05/19/2008 20 CS200828236 168 CREDIT CORPORATION 06/05/2008 21 CS200812630 168 MEGASAVE TRADING CORP. 08/14/2008 22 CS200819056 168 TAXI CORP.
    [Show full text]
  • Cordillera Administrative Region (Car)
    1 MINES AND GEOSCIENCES BUREAU REGIONAL OFFICE NO.: CORDILLERA ADMINISTRATIVE REGION (CAR) Directory of Mines and Quarries Municipality/ Region Mineral Province Commodity Permit Holder Operator City CAR Metallic ABRA Baay-Licuan Gold, Silver Jabel Corporation Jabel Corporation CAR Metallic ABRA Baay-Licuan Gold, Copper, etc Jabel Corporation Jabel Corporation Tuffaceous, Limestone, CAR Non-Metallic ABRA Bucay Abra Mining and Industrial Corporation Abra Mining and Industrial Corporation Silica Sand Gian Raphiel Agonoy Commercial Sand CAR Non-Metallic APAYAO Pudtol Sand and Gravel Gian Raphiel Agonoy Commercial Sand and Gravel and Gravel Lorenzo S. Magpale, Jr. Commercial Sand CAR Non-Metallic APAYAO Flora Sand and Gravel Lorenzo S. Magpale, Jr. Commercial Sand and Gravel and Gravel Teofilo Aguda, Jr. Commercial Sand and CAR Non-Metallic APAYAO Flora Sand and Gravel Teofilo Aguda, Jr. Commercial Sand and Gravel Gravel Sorian Patayan Commercial Sand and CAR Non-Metallic APAYAO Flora Sand and Gravel Sorian Patayan Commercial Sand and Gravel Gravel CAR Non-Metallic APAYAO Flora Sand and Gravel LIER Sand and Gravel LIER Sand and Gravel CAR Non-Metallic APAYAO Luna Sand and Gravel Armando Menor Armando Menor Marciano Yadao Commercial Sand and CAR Non-Metallic APAYAO Sta Marcela Sand and Gravel Marciano Yadao Commercial Sand and Gravel Gravel Barangay Emiliana, Sta Marcela Commercial Sand and Barangay Emiliana, Sta Marcela CAR Non-Metallic APAYAO Sta Marcela Sand and Gravel Gravel Commercial Sand and Gravel John Val Sagisi Commercial Sand and CAR Non-Metallic APAYAO Pudtol Sand and Gravel John Val Sagisi Commercial Sand and Gravel Gravel Joaquin D. Pascua Commercial Sand and CAR Non-Metallic APAYAO Pudtol Sand and Gravel Joaquin D.
    [Show full text]
  • Republic of the Philippines
    I. GENERAL INFORMATION A. PHYSICAL AND GEOGRAPHIC CHARACTERISTICS 1. Location and Territorial Jurisdiction Benguet is one of the six provinces comprising the Cordillera Administrative Region or CAR. It was by the Republic Act No. 4695 enacted on June 18, 1966 which divided the former Mountain Provinces of Benguet, Mountain Province, Ifugao and Kalinga-Apayao. At 5,000 feet above sea level, Benguet, the gateway to the highland provinces of CAR lies in the southern end of the Cordillera Mountain Range, 256 kms north of Manila and is bounded on the North by Mt. Province, on the East by Ifugao and Nueva Viscaya, on the South by Pangasinan, and on the west by La Union and Ilocos Sur and it is accessible by land and air transport. Rugged and sloping terrain and deep valleys characterize the province. Amidst these mountain peaks is a wide plateau wherein the capital town, La Trinidad, is located. A total of 13 municipalities and 140 barangays make up the province. Location Map of Benguet 1 PENRO Benguet.docx….ma.ann L. 2. Land Area Benguet Province covers 13 municipalities namely: Atok, Bakun, Buguias and Mankayan covered by CENRO Buguias, Kapangan, Kibungan, La Trinidad, Sablan, Tuba and Tublay (CENRO La Trinidad); Bokod, Itogon, Kabayan and the chartered City of Baguio (CENRO Baguio City). 2.1 Based on Office Record/data Municipal Land Areas Towns/ Areas (Hectares) No. of Barangays Municipalities Based on Political Based on Thematic Boundary survey maps Atok 15,642.86 13,700 8 Bakun 28,911.7 23,740 7 Bokod 23,356.51 43,530 10 Buguias 17,560.14 19,310 14 Itogon 44,972.95 42,370 9 Kabayan 23,614.97 17,750 13 Kapangan 16,968.62 13,640 15 Kibungan 15,871.44 19,210 7 La Trinidad 6,823.6 6,140 16 Mankayan 13,070.93 13,170 12 Sablan 10,454.73 9,160 8 Tuba 27,214.43 31,438 13 Tublay 8,943.41 8,490 8 Baguio City 5,749.6670 5,748 129 Total 259,159.16 267, 396 269 2.2.
    [Show full text]
  • Insights from Selected La Trinidad and Atok, Benguet Agricultural Producers
    A Service of Leibniz-Informationszentrum econstor Wirtschaft Leibniz Information Centre Make Your Publications Visible. zbw for Economics Reyes, Celia M.; Domingo, Sonny N.; Agbon, Adrian D.; Olaguera, Ma. Divina C. Working Paper Climate-sensitive decisions and use of climate information: Insights from selected La Trinidad and Atok, Benguet agricultural producers PIDS Discussion Paper Series, No. 2017-47 Provided in Cooperation with: Philippine Institute for Development Studies (PIDS), Philippines Suggested Citation: Reyes, Celia M.; Domingo, Sonny N.; Agbon, Adrian D.; Olaguera, Ma. Divina C. (2017) : Climate-sensitive decisions and use of climate information: Insights from selected La Trinidad and Atok, Benguet agricultural producers, PIDS Discussion Paper Series, No. 2017-47, Philippine Institute for Development Studies (PIDS), Quezon City This Version is available at: http://hdl.handle.net/10419/211007 Standard-Nutzungsbedingungen: Terms of use: Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Documents in EconStor may be saved and copied for your Zwecken und zum Privatgebrauch gespeichert und kopiert werden. personal and scholarly purposes. Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle You are not to copy documents for public or commercial Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich purposes, to exhibit the documents publicly, to make them machen, vertreiben oder anderweitig nutzen. publicly available on the internet, or to distribute or otherwise use the documents in public. Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, If the documents have been made available under an Open gelten abweichend von diesen Nutzungsbedingungen die in der dort Content Licence (especially Creative Commons Licences), you genannten Lizenz gewährten Nutzungsrechte.
    [Show full text]
  • World Bank Document
    National Roads Improvement and Management Program Public Disclosure Authorized Department of Public World Bank Works and Highways RP-24 VOL. 3 (Revised) Public Disclosure Authorized HALSEMA HIGHWAY RESETTLEMENT ACTION PLANI Public Disclosure Authorized November 1999 Public Disclosure Authorized Department of Public Works and Highways Manila, Philippines TABLE OF CONTENTS Table of Contents List of Annexes List of Tables List of Figures Acronyms and Abbreviations Executive Summary 1. INTRODUCTION 1.1 Description of the Project 1.2 Types of Impacts 1.3 Steps taken to Minimize the Impacts 1.4 Main Objectives of the Resettlement Action Plan 2. DESCRIPTION OF IMPACTS AND SOCIO-ECONOMIC CHARATERISTICS 7 2.1 Administrative Units 2.2 Social and Economic Characteristics of Project Affected Persons 2.2.1 Household size 2.2.2 Minority Groups 2.2.3 Household Income 2.3 Impacts of the Project 2.3.1 Impacts on Land 2.3.2 Impacts on Structures 2.3.3 Other Miscellaneous Structures and Fixed Assets 2.3.4 Loss of Crops and Trees 2.3.5 Loss of Incomes and Businesses 2.3.6 Loss of Electricity and Water Connections 2.3.7 Impacts on Public Infrastructures Facilities 2.3.8 Tenants 2.3.9 Temporary Impacts 2.4 Relocation Requirements 3. COMPENSATION RATES AND ENTITLEMENTS 18 3.1Introduction 3.2 Detailed Compensation Entitlements 3.2.1 Loss of Arable Land 3.2.2 Loss of Residential or Comnnercial Land 3.2.3 Loss of Main Residential Structures 3.2.4 Loss of Independent Shops/Stores 3.2.5 Loss of Other Fixed Structures 3.2.6 Loss of Standing Crops and Trees 3.2.7 Loss of Service Facilities 3.2.8 Loss of Public Infrastructures and OtheirAssets .
    [Show full text]
  • Benguet Geological and Mineral Resources Distribution
    GEOLOGICAL AND MINERAL RESOURCES DISTRIBUTION PROVINCE OF BENGUET LEGEND STATUS OF MINERAL DEPOSITS CARABALLO GROUP METALLIC DEPOSITS Predominantly volcanic breccia - OPERATING MINES agglomerates, pyroclastic w/ intercalated andesitic & basaltic 1. Acupan Mine, B.C.------------------------------------------------Au, Ag flows & alternating beds of sand 2. Antamok Mine, B.C.----------------------------------------------Au, Ag.Cu stone & shale MOUNTAIN PROVINCE 3. BACO, B.C. -------------------------------------------------------- Au, Ag 4. Kelly Mines, B.C. ------------------------------------------------- Au, Ag 120° 28' 120° 58' ROSARIO FORMATION 5. Itogon Mine ------------------------------------------------------- Au, Ag 6. Thanksgiving Mine, Beng. Ex. -------------------------------- Au, Ag Cu, Zn Compose of rhythmic beds, 16° 53' 16° 53' of brown sandstoneshale & 7. Coppershield Project Beng Ex.------------------------------- Cu, Au silfstone, minor tuff, arenitic 8. Sto. Tomas II Mines, Philex ------------------------------------ Cu, Au 9. Lepanto Cons. Mng. Co. ---------------------------------------Au, Au, Ag 9 limestone & pebble conglo- 18 merate 10. Sierra Oro Project, B.C. ---------------------------------------- Au, Ag 11. Cal Harr, B.C. ----------------------------------------------------- Au, Ag Mankayan 17 12. Baguio Gold Mine, B.C. ---------------------------------------- Au, Cu KLONDIKE FORMATION 13. Omibex, Beng. Expl. -------------------------------------------- Au, Ag, Pb, Zn, Cu BMGS DATA (1982) 10 11 Consists of intimate
    [Show full text]
  • Breaking Promises, Making Profits Mining in the Philippines
    Breaking promises, making profits Mining in the Philippines A Christian Aid and PIPLinks report December 2004 Contents Foreword and glossary 2 Executive summary 3 1. The laws on mining: colonialism continued? 6 2. Mining in the Philippines – who benefits and who pays? 15 3. Mankayan – a devastating legacy 22 4. Canatuan – undermining consent 29 5. Corporate government and international social responsibility for mining 42 Notes 55 Acknowledgements 60 Foreword Over the past eight years the authors have visited and listened to mine-affected communities, company representatives, government officials and groups from many different parts of the Philippines. They have visited communities in Siocon, Bayog, Sibutad, San Miguel, Midsalip, Pagadian, Leon Postigo, Sindangan and Iligan in western Mindanao; Mainit, Tubod, Placer and Claver in northeast Mindanao; and Toledo, Cebu, Palawan, Victoria, Pinamalayan Naujan and Calapan in Mindoro Oriental. They have also visited Aurora Province and the Cordillera region, including the communities of Itogon, Mankayan, Cervantes, Tadian, Quirino, Bontoc and Sagada, among many other areas. Glossary ADB Asian Development Bank Barangay Village CADT Certificate of Ancestral Domain Title CLC Cordillera Labor Center DCMI DIOPIM Committee on Mining Issues DENR Department of Environment and Natural Resources EIR Extractive Industries Review FPIC Free Prior and Informed Consent FSMA Forest Stewardship Management Agreement IPRA Indigenous Peoples Rights Act MAP Mineral Action Plan MMSD Mines, Minerals and Sustainable
    [Show full text]
  • Ef27636e23ac298f492576550
    • 50 MISSING: 34 in CAR (Benguet); 14 in Region I (9 in La Union, and 5 in Pangasinan); 1 in Region II (Cagayan); and 1 in Region III (1 in Nueva Ecija and 1 in Pampanga) C. Damages 5 A total of 55,574 houses were damaged (5,926 totally / 49,648 partially) – Tab C 5 Estimated cost of damage to infrastructure and agriculture was pegged at PhP 16.577 Billion (PhP 4.863 Billion – Infrastructure; PhP 11.711 Billion – Agriculture and PhP 0.003 B - Private Property) – Tab D D. Cost of Assistance 5 Cost of Assistance is PhP 113,668,572: NDCC (PhP 19,801,250); DSWD (PhP 31,923,871); DOH (PhP 5,508,890); LGUs (PhP 45,930,600); NGOs/Other GOs (PhP 10,523,962) – Tab E 5 NDCC Rice assistance – 21,800 sacks of rice were already distributed to the LGUs in Regions I, II, III, IV-A, IV-B, V, VI and CAR E. Status of Roads and Bridges – Tab F 5 Northern Luzon • Status of Five (5) Major Roads and Bridges Going to Baguio City, CAR • Kennon Road, Naguillan Road, Baguio–Bontoc Road (Ambassador Section) and Marcos Highway are already passable while Baguio-Nueva Vizcaya Road (Kayapa-Baguio Road) is still not passable. Clearing and punch-thru operations are on-going. Marcos Highway is passable to all types of vehicles, Kennon and Naguillan Roads are passable only to light vehicles. • Bued Bridge at Manila North Road located at the boundary of La Union and Pangasinan is not passable due to collapsed 2 middle spans 5 Alternate Route: (Going to La Union and Ilocos Provinces) • Manila-Tarlac City-Camiling–Mangaldan-Mangatarem-Lingayen-Dagupan City – de Venecia Highway –San Favian-Damortis, La Union • Manila to Binalonan (using Manila North Road ) turn left to Manaoag- San Jacinto –San Fabian-Damortis, La Union • Urdaneta- Manaoag- San Jacinto-San Fabian-Damortis, La Union 5 Region IV-A • Palico-Balayan-Batangas Road – impassable due to scoured embankment and protection of 1st approach of Cawong Bridge • Marikina-Infanta Road (Marcos highway - impassable due to washed-out 2nd approach of last span 5 Region IV-B • Manoot Bailey Bridge, MWCR (Labangan)-Murtha-Jct Isiron Road, Km 256+422 Brgy.
    [Show full text]