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Mineralpedia Details for Carminite

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Carminite

Carminite

Named for the typical deep red color that is also known as carmine. Carminite is an uncommon mineral that is found as an alteration product or arsenopyrite in oxidized lead-bearing mineral deposits. Localities for Carminite include in Germany, England, France, the USA, Mexico, Australia, Namibia, among several others. Minerals associated with Carminite include beudantite, scorodite, dussertite, arsenosiderite, bayldonite, mimetite, cerussite, anglesite, plumbojarosite, and wulfenite.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/carminite.pdf

Formula
PbFe3+2(AsO4)2(OH)2 
Crystal System
Orthorhombic 
Crystal Habit
Lath, Acicular 
Cleavage
Distinct, None, None 
Luster
Vitreous - Pearly 
Color
carmine red, reddish brown 
Streak
reddish yellow 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
3.5 
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Carminite from Kintore Opencut, Broken Hill, New South Wales, Australia

Carminite
            from Kintore Opencut, Broken Hill, New South Wales, Australia

Beautiful micro red, less than 0.5mm, spherulites of Carminite in spongy limonitic matrix.

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CARMINITE from San Rafael mine, Nye Co., Nevada, United States

CARMINITE
            from San Rafael mine, Nye Co., Nevada, United States
Special Info
EDS Confirmed

Tiny red acicular crystals lining vugs in 1cm matrix with mustard yellow Segnitite.

Click thumbnail images for larger view.

Carminite from Tsumeb mine, Tsumeb, Namibia

Carminite
            from Tsumeb mine, Tsumeb, Namibia

An excellent, rich specimen with beautiful sprays of Carminite throughout the matrix of Beudantite. The Carminite sprays measure about 3mm. The digital camera brought out the red in the Carminite, but they are actually a better, a more translucent deeper red.

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Carminite from Penberthy Croft mine, St. Hilary, Cornwall, England

Carminite
            from Penberthy Croft mine, St. Hilary, Cornwall, England

The specimen has a detailed long number but does not tie it to any label. The Carminite is deep red and very micro as well as the yellowish Beaverite. It does have a Barstow label.

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Carminite from Mapimi dist., Durango, Mexico

Carminite
            from Mapimi dist., Durango, Mexico

Deep carmine red Carminite crystals to about 0.75mm in aggregates acoss the  face and covered with long tapering scalenohedral crystals of water clear Calcite.

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