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ENARGITE (Copper Arsenic Sulfide) Enargite is related to the rare mineral wurtzite. In enargite 75% of the zinc atoms are replaced by copper and 25% of the zinc atoms are replaced by arsenic, Cu Unfortunately for enargite its hemimorphic character is undetectable because of its crystal form. mineral.galleries.com /minerals/sulfides/enargite/enargite.htm   (409 words)

Cerro de Pasco district, The Mineralogical Record - Find Articles Lead-zinc ore is depositionally associated with pyrrhotite and is composed of pyrite, sphalerite, galena and quartz, with minor pyrrhotite, arsenopyrite, marcasite, tennantite, chalcopyrite, chlorite, sericite, siderite and calcite. Enargite and enargite-tennantite ore occurs in steep veins in the vent and in a pyrite-quartz body, and also occurs in steep pipes associated with the veins in the northern portion of the pyrite-quartz body (Ward, 1961). Luzonite, which differs in color from enargite, is found in the Cleopatra vein and in orebodies with a high gold content. www.findarticles.com /p/articles/mi_qa3672/is_199707/ai_n8758286   (934 words)

Thesis Excerpts--Tina Takagi   (Site not responding. Last check: 2007-10-14) From this study, it is clear that the supergene-enriched pyrite-covellite-enargite mineralization and associated acid-sulfate, high-sulfidation advanced argillic alteration was preceded by an earlier widespread protore stage of chalcopyrite-pyrite-bornite-pyrrhotite, associated with potassic alteration. The presence of lithophile elements such as Sn and V in the enargites is attributed to Agua Rica’s metallogenic location, both on the margin of the continental craton and on the southern extension of the Bolivian tin belt. In plan view the enargites occur in extensive east-west trending bands and are zoned: Sn-V enargites in the center, flanked by normal enargite, and then low-As enargite on the outside. www.ocf.berkeley.edu /~tktakagi/thesis.html   (524 words)

Stacking disorder and polytypism in enargite and luzonite -- Posfai and Sundberg 83 (34): 365 -- American Mineralogist Enargite and luzonite are intergrown at the atomic level in samples from Recsk, Hungary. The presence of defect-free luzonite and enargite indicates that both minerals grew directly from the hydrothermal solution. The disordered structures represent transitional structural states between luzonite and enargite and probably reflect the effects of fluctuating conditions during hydrothermal deposition. ammin.geoscienceworld.org /cgi/content/abstract/83/3-4/365   (234 words)

enargite.htm   (Site not responding. Last check: 2007-10-14) Description: Enargite is a rare hydrothermal mineral found associated with other copper minerals. FOREST COUNTY: Small grains of enargite occur with bornite and digenite replacing chalcopyrite at the Crandon deposit near Little Sand Lake. GRANT COUNTY: Tiny tabular prismatic crystals of enargite was found at the Piquette #2 mine in the SW NE Sec. www.uwrf.edu /~wc01/enargite.htm   (117 words)

Relationships between microstructure and composition in enargite and luzonite -- Posfai and Buseck 83 (34): 373 -- ... Coexisting enargite and famatinite and zoning in luzonite-famatinite indicate fluctuations in the Sb-content of the fluid during ore deposition. On the other hand, assemblages of Sb-free enargite and luzonite probably reflect thermal oscillations; heavily disordered, intermediate structures may have formed near the transition temperature of low-temperature luzonite to high-temperature enargite. Our results suggest that characteristic microstructures in enargite, luzonite, and famatinite can be useful for constraining fluid composition and temperature during ore deposition. ammin.geoscienceworld.org /cgi/content/abstract/83/3-4/373   (278 words)

LechtmanH_18_1   (Site not responding. Last check: 2007-10-14) The two arsenic minerals most likely to have been used in the north coast production of copper-arsenic alloys are enargite and arsenopyrite; the former is a mineral found only in the high sierra of the central Andes, whereas the latter is also available in some of the north coast valleys. No specimens of enargite have been reported thus far at Batán Grande, but this article discusses the identification of one example of enargite ore from the nearby metallurgical site of Batanes del Tablazo, in the Chancay Valley. Inferences drawn from a single ore specimen must be made with caution, but the new data lend support to the argument that one of the main sources of supply of arsenic-bearing ores for coastal smelters was the deposits located in the highlands to the east. www.bu.edu /jfa/Abstracts/L/LechtmanH_18_1.html   (314 words)

Enargite (via CobWeb/3.1 planetlab2.cs.unc.edu)   (Site not responding. Last check: 2007-10-14) Enargite is the primary copper ore in Chinkuahshih mine, therefore it is a very common mineral in Chinkuahshih mine. However, good specimens of Enargite are only found underground. So after closing of the mine, a good specimen of Enargite is highly sought after by collectors worldwide. www.geocities.com.cob-web.org:8888 /chinkuahshihmines/Enargite.htm   (56 words)

Enargite, rock, crystal, mineral, gem stone, birth stones - mineralgallery Enargite, rock, crystal, mineral, gem stone, birth stones - mineralgallery The deeper the oxidation zone, the higher was the degree of alteration of the enargite into tennantite. This was particularly common on the 16 th level where many groups of www.mineralgallery.co.za /enargite.htm   (125 words)

Mineral Specimen for sale of Enargite and Pyrite from Leonard Mine No. 1, Butte Mining District, Summit Valley, Silver ...   (Site not responding. Last check: 2007-10-14) Enargite and Pyrite from Leonard Mine No. 1, Butte Mining District, Summit Valley, Silver Bow County, Montana. This mineral specimen of Enargite and Pyrite from Leonard Mine No. 1, Butte Mining District, Summit Valley, Silver Bow County, Montana is available for sale from John Betts - Fine Minerals, mineral dealer located in New York City, New York. The enargite crystals have a dull luster and striated crystal surfaces. www.johnbetts-fineminerals.com.cob-web.org:8888 /jhbnyc/gifs/33678.htm   (229 words)

Mineral Specimen for sale of Enargite from Red Mountain, San Juan County, Colorado. (via CobWeb/3.1 ...   (Site not responding. Last check: 2007-10-14) Enargite from Red Mountain, San Juan County, Colorado. This mineral specimen of Enargite from Red Mountain, San Juan County, Colorado is available for sale from John Betts - Fine Minerals, mineral dealer located in New York City, New York. No enargite crystal terminations are visible, all are massive and intergrown. www.johnbetts-fineminerals.com.cob-web.org:8888 /jhbnyc/gifs/34825.htm   (184 words)

Alunite in the Pascua-Lama High-Sulfidation Deposit: Constraints on Alteration and Ore Deposition Using Stable Isotope ... The stability fields of alunite (alun), enargite (en), hematite (hem), magnetite (mag), muscovite (musc), pyrrhotite (po), pyrite (py), tennantite (tenn), and the predominance fields of aqueous sulfur-bearing species are shown. The fl area represents the bulk of alunite-pyrite-enargite ore and is contained within the stability fields of alunite, pyrite, and enargite and is constrained by H Local mineralogical variability (e.g., monomineralic veins of alunite, enargite, and/or pyrite and the presence of native sulfur) suggests that the composition of the ore fluid varied over a wider range locally, schematically represented by the larger white area. econgeol.geoscienceworld.org /cgi/content/full/100/1/131   (6682 words)

Luzonite Relationships between microstructure and composition in enargite and luzonite. Paragenesis of enargite and luzonite-famatinite in the Chinkuashih gold-copper deposits... ore minerals are enargite and luzonite, with significant presence of tennantite-tetrahedrite... www.toprocks.net /MineralList/54/Luzonite.asp   (479 words)

Minerals For Sale : Enargite (via CobWeb/3.1 planetlab2.cs.virginia.edu)   (Site not responding. Last check: 2007-10-14) Enargite from Suemei Mine, Chinkuashi, Taipei Co. Taiwan. Most Enargite specimen including this one collected from Suemei are not very lustrous. Please note the left part was broken when it was retrieved and repaired. www.taiwanfm.com.tw.cob-web.org:8888 /mineral/enargite.htm   (125 words)

Enargite Gallery   (Site not responding. Last check: 2007-10-14) Enargite crystals in quartz matrix with cornubite-cornwallite coating. Enargite and tennantite mix-aggregate between clear quartz crystals. Enargite crystals, the biggest measure at 4 mm www.mindat.org /gallery.php?min=1380   (127 words)

Enargite   (Site not responding. Last check: 2007-10-14) Large crystals of enargite up to 12 mm with small white quartz crystals up to 5 mm. The enargite crystals have a dull luster with some areas of silky sheen. Hard to photograph, must be seen in person to be appreciated. www.mindat.org /picshow.php?id=1308   (103 words)

ENARGITE   (Site not responding. Last check: 2007-10-14) $40.00, item #8AV5-A. Enargite specimen with small sparkling crystals from the Longfellow mine, Colorado. Specimen is mounted in a 2 inch perky box. Specimen is mounted in a 2 inch perky box (some blue sticky material is visible in large photos). www.earth-energy.com /ENARGITE1.html   (189 words)

Mineral Specimen for sale of Enargite, Chalcopyrite, Quartz from Butte Mining District, Summit Valley, Silver Bow ...   (Site not responding. Last check: 2007-10-14) Mineral Specimen for sale of Enargite, Chalcopyrite, Quartz from Butte Mining District, Summit Valley, Silver Bow County, Montana. Enargite, Chalcopyrite, Quartz from Butte Mining District, Summit Valley, Silver Bow County, Montana. This mineral specimen of Enargite, Chalcopyrite, Quartz from Butte Mining District, Summit Valley, Silver Bow County, Montana is available for sale from John Betts - Fine Minerals, mineral dealer located in New York City, New York. www.johnbetts-fineminerals.com.cob-web.org:8888 /jhbnyc/gifs/34186.htm   (202 words)

Enargite Mineral Data Comments: Lustrous, metallic gray columnar crystals of enargite with minor quartz. Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. Gray to light pinkish brown with deep red internal reflections. webmineral.com /data/Enargite.shtml   (284 words)

Enargite   (Site not responding. Last check: 2007-10-14) Black prismatic enargite is growing in a pocket of quartz vein. It lost luster by weathering but its striation along elongation is clearly observed. End face is composed mainly of (001), and pyramidal face is small. www.h5.dion.ne.jp /~nspicnic/mine/sample/enargiteHONGOe.htm   (56 words)

Lehigh Black Mineral Page 2502) TENNANTITE pseudomorph after ENARGITE, Julcani Mine, Angaraes, Huancavelica, Peru - 6 x 5 x 3 cm, Lustrous crystals on a matrix of Pyrite with minor Barite. Largest crystal is 1.8 x 1.2 x.4 cm from the find in December 1999. Largest crystal is 1.8 x 1 x.3 cm and has a blue and purple patina. www.lehighminerals.net /Peru100plus1.htm   (399 words)

Enargite Mineral Data (via CobWeb/3.1 planetlab2.cs.virginia.edu)   (Site not responding. Last check: 2007-10-14) Comments: Violet metallic crystalline famatinite with fl massive enargite. Warning: this large pop-up is very compute intensive and may not work well with some computers. Adiwidjaja G, Lohn J, Acta Crystallographica, Section B, 26 (1970) p.1878-1879, Strukturverfeinerung von enargit, Cu3AsS4, Locality: Butte, Montana, USA www.webmineral.com.cob-web.org:8888 /data/Enargite.shtml   (264 words)

Gem, Rock, and Mineral Postage Stamps Featuring Enargite   (Site not responding. Last check: 2007-10-14) Gem, Rock, and Mineral Postage Stamps Featuring Enargite Nomenclature: Named after the Greek enargos, which means "visible" or "obvious" due to the mineral's distinct cleavage. Additional Notes: Enargite occasionally occurs in pseudo-hexagonal, star-shaped, cyclic twinned crystals. stampmin.home.att.net /enargite.htm   (47 words)

Fine Minerals - Enargite (via CobWeb/3.1 planetlab2.cs.virginia.edu)   (Site not responding. Last check: 2007-10-14) Enargite and Tetrahedrite Longfellow Mine Ouray Colorado - $24.99 Tyrolite on Enargite col 1948 Mammoth Mine Dana locale - $18.00 Auction list is continuously updated - please bookmark this page and check back often! fineminerals.com.cob-web.org:8888 /Enargite-s.html   (42 words)

Mineral Specimens of Molybdates, Sulfosalts, Arsenates, Borates, Halides, Tellurides, including Wulfenite, etc. #34186, Enargite, Chalcopyrite, Quartz, Butte Mining District, Montana (m) $65 #33678, Enargite and Pyrite, Leonard Mine No. 1, Montana (m) $85 #35361, Enargite on Pyrite, Leonard Mine, Butte Mining District, Montana (t) $25 www.johnbetts-fineminerals.com /jhbnyc/assorted.htm   (428 words)

SME--VIRTUAL ATLAS OF OPAQUE AND ORE MINERALS   (Site not responding. Last check: 2007-10-14) Chalcopyrite (yellow, bottom left) and an enargite group mineral (brown, top right) enclose relict crystals of haematite (blue). The relict haematite grains within enargite are in optical continuity showing that enargite has replaced haematite. Polished block, plane polarized light, x 80, air www.smenet.org /opaque-ore/plate21c.htm   (87 words)

Crystals for Sale: ENARGITE, Worldwide Minerals Nice bright lustrous dark crystals of enargite on a gold massive pyrite matrix with a few pyrite crystals as well. For up to date news about our online shop, trade shows, or exhibitions just click here Take a look at our Special Offers page, where you will find some excellent bargains! www.crystalvine.co.uk /proddetail.asp?prod=enargite   (63 words)

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