$450Median
339Sold (12 mo)
$325Last sale
Added 5d ago
Siderite with Pyrrhotite, Dolomite
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All Brazilian classic with lustrous lenticular slightly translucent crystals of siderite measuring to 2.5 cm in size across the top of matrix. Small glassy colorless crystals of dolomite are present, as well as metallic crystals of pyrrhotite. Cubanite is also likely present. This is in great condition. The specimen comes with a previous collection label from Ray DeMark.The historic Morro Velho Mine located in Nova Lima, Minas Gerais, Brazil, began operations in 1834 and permanently closed in 2003, functioning for nearly two centuries as one of the deepest and most productive gold mines in the Americas. Geologically, the deposit is hosted within the Precambrian rocks of the Nova Lima Group, consisting predominantly of greenstone belt assemblages such as metamorphosed volcanic and sedimentary sequences, where gold mineralization occurs within massive sulphide replacement lodes, quartz veins, and shear zones.
Product details
SpeciesSiderite, Dolomite, Pyrrhotite
SizeSmall Cabinet
Dimensions7.0 x 6.0 x 3.0 cm
Added on09/26/2026
LocalityBrazil, Minas Gerais, Morro Velho mine
Current owner
Unknown Owner
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Weinrich Minerals | Not disclosed |
Learn more
Mineral guide
Learn about Siderite
warm-toned iron carbonate with sharp rhombohedra and occasional gemmy crystals; prized for luster, classic localities Harz, Panasqueira, Dal’negorsk.Regional guide
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