Image slideshow

Kiddcreekite, Colusite, Tennantite, Tellurium, Galena, Pyrite, Chalcopyrite.
Kiddcreekite, Colusite, Tennantite, Tellurium, Galena, Pyrite, Chalcopyrite

This image is under copyright. Unauthorised reproduction is prohibited. 

Locality: Campbell Mine (Campbell shaft), Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA.

Digital image from a reflected light photomicrograph (horizontal field ~ 300 microns) oil immersion, E.958. 2500 Level 178-1. Campbell Orebody.

A complex intergrowth of kiddcreekite, colusite, tennantite, galena, native tellurium, chalcopyrite, with a trace of altaite in pyrite.

This image was used on promotional material for the 2nd edition of the Quantitative Data File for Ore Minerals in 1986.

Pyrite, Chalcopyrite, Hessite, Stützite, Rucklidgeite, Volynskite, Altaite
Pyrite, Chalcopyrite, Hessite, Stützite, Rucklidgeite, Volynskite, Altaite

This image is under copyright. Unauthorised reproduction is prohibited. 

Locality: Campbell Mine (Campbell shaft), Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA

Reflected light digital image from photomicrograph transparency. The Campbell Mine yielded a host of interesting minerals, sometimes in complex relationships, as seen here, with sulphides and tellurides of various compositions.

Horizontal field around 300 microns.

View an article on the Campbell orebody

Nukundamite, Covellite, Pyrite
Nukundamite, Covellite, Pyrite

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Locality: Undu mine ("Udu mine"), Nukundamu, Vanua Levu, Fiji

Reflected light digital image by Alan Criddle of nukundamite (strongly pleochroic from red-brown to grey) intergrown with covellite (blue) and pyrite (white)in plane polarised light. The crossed polars image shows nukundamite to be strongly anisotropic with metallic green rotation tints.

Image on the type specimen BM 1974,5.

See Rice C M et al. 1979. Min. Mag. 43: 193-200.

Gold, Pyrite, Quartz
Gold, Pyrite, Quartz

This image is under copyright. Unauthorised reproduction is prohibited. 

Locality: Kundana mines, Kalgoorlie-Boulder Shire, Western Australia, Australia

A digital image of a reflected light photomicrograph (oil immersion)with horizontal field about 220 microns.

A section through a cube of gold perched on a grain of pyrite now included in quartz. A similar photo of the same area taken by student Stephen Knipe was included in New Scientist magazine in 1991.

The specimen was collected on an overseas consultancy project in July 1989.