Mine detail: Crixas

Previously called 'Ocorrecia Da Fazenda Do PrefeitoMina Iii'

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Location

Lat / long:

-14.53188, -50.28355

Resource(M)

Primary:	Gold
Ore:	Chalcopyrite, Galena, Gold, Pyrrhotite, Scheelite
Gangue:	Chlorite, Garnet, Magnetite, Quartz, Sericite, Tourmaline
Orebody form:	TABULAR, LENTICULAR
Discovery year:	1974

Production

Operation type:	Unknown
Production size:	Yes
Development status:	Producer
First production started:	1988
Last production ended:	1991

Geology

Host rock:	Ribeirao Das Antas Formation, Pillar De Goias Group;Ribeirao Das Antas Formation, Pillar De Goias Group
Host type:	Schist,Dolomite
Associated rock:	Rio Vermelho Formation, Pillar De Goias Group;Corego Alayadinho Formation, Pillar De Goias Group
Associated type:	Amphibolite,Volcanic Rock (Aphanitic),Mafic Volcanic Rock
Tectonic:	Greenstone Belt
Alteration processes:	Carbonatization, Sericitization, Silicification, Sulfidization. Fervoan Dolomite Schist Is Alteration Product Of Amphibolite, Sercite-Chlorite Schist Probably Is Also. Quartz Commented Graphitic Pelite Is Alteration Product Of Graphitic Pelite. Carbonatization, Sericitization And Silicification Are Indicated.

References

MRDS	TC00581
DEP	10056540
Reference	{Deposit:: ELEVATORSKI, E.A., 1988, WORLD GOLD; MINES-DEPOSITS-DISCOVERIES; VOL. I., NORTH, CENTRAL AND SOUTH AMERICA: MINOBRAS MINING SERVICES, 156 P.}{Deposit:: BRANCO, PAULO CESAR DE AZEVEDO, 1984, PRINCIPAIS DEPOSITOS MINERAIS: CONCEITOS METODOLOGIA E LISTAGEM, IN DEPT. NACIONAL DA PRODUCAO MINERAL, GEOLOGIA DO BRASIL, TEXTO EXPLICATIVO DO MAPA GEOLOGICO DE BRASIL E DA AREA OCEANICA ADJACENTE INCLUINDO DEPOSITOS MINERAIS: DEPT. NACIONAL DA PRODUCAO MINERAL, P. 359-419.}{Deposit:: THOMSON, M.L., AND FYFE, W.S., 1990, THE CRIXAS GOLD DEPOSIT, BRAZIL: THRUST-RELATED. POSTPEAK METAMORPHIC GOLD MINERALIZATION OF POSSIBLE BRASILINO CYCLE AGE: ECONOMIC GEOLOGY, VOL. 85, P. 928-942.}{Deposit:: YAMAKOA, W.N., AND ARAUJO, E.M., 1988, DEPOSITO DE OURO DE MINA III, CRIXAS, GOIAS, IN PRINCIPAIS DEPOSITOS MINERAIS DO BRASIL, EDS. C. SCHOBBNEHAUS AND C.E.S. COELHO: MINISTERIO DAS MINAS E ENERGIA, BRASILIA, V. III, P. 491-498.}{Deposit:: THOMPSON, M.C., 1986, PETROLOGY OF THE CRIXAS GOLD DEPOSIT, BRAZIL: EVIDENCE FOR GOLD ASSOCIATED WITH HYDROTHERMAL ALTERATION, SUBSEQUENT TO METAMORPHISM IN A. JAMES MACDONALD, ED., GOLD 86: AN INTERNATIONAL SYMPOSIUM ON THE GEOLOGY OF GOLD DEPOSITS, PROCEEDINGS VOLUME, TORONTO, P. 284-296.}{Other Database:: CIMRI}
Reporter	Bolm, Karen S., Page, Norman J.