Siderite Dolomite Pyrrhotite
Origin: Morro Valho Mine, Minas Cerals, Brazil
W 56.6mm x D 53.3 mm x H 42.6
Siderite
Composition: Iron carbonate (FeCO₃).
Color: Typically brown, yellowish, or greenish.
Properties: Often found in sedimentary rocks; can form in various geological environments.
Uses: Important ore of iron.
Dolomite
Composition: Calcium magnesium carbonate (CaMg(CO₃)₂).
Color: Usually white, gray, or pink.
Properties: Commonly forms in sedimentary environments; reacts with acid (but more slowly than calcite).
Uses: Used in construction, as a source of magnesium, and in the production of glass and ceramics.
Pyrrhotite
Composition: Iron sulfide (Fe₁₋ₓS, where x can vary).
Color: Bronze to golden yellow, often with a metallic luster.
Properties: Magnetic; can be found in igneous and metamorphic rocks.
Uses: Sometimes mined for its iron content and can occur with nickel deposits.
Origin: Morro Valho Mine, Minas Cerals, Brazil
W 56.6mm x D 53.3 mm x H 42.6
Siderite
Composition: Iron carbonate (FeCO₃).
Color: Typically brown, yellowish, or greenish.
Properties: Often found in sedimentary rocks; can form in various geological environments.
Uses: Important ore of iron.
Dolomite
Composition: Calcium magnesium carbonate (CaMg(CO₃)₂).
Color: Usually white, gray, or pink.
Properties: Commonly forms in sedimentary environments; reacts with acid (but more slowly than calcite).
Uses: Used in construction, as a source of magnesium, and in the production of glass and ceramics.
Pyrrhotite
Composition: Iron sulfide (Fe₁₋ₓS, where x can vary).
Color: Bronze to golden yellow, often with a metallic luster.
Properties: Magnetic; can be found in igneous and metamorphic rocks.
Uses: Sometimes mined for its iron content and can occur with nickel deposits.
Origin: Morro Valho Mine, Minas Cerals, Brazil
W 56.6mm x D 53.3 mm x H 42.6
Siderite
Composition: Iron carbonate (FeCO₃).
Color: Typically brown, yellowish, or greenish.
Properties: Often found in sedimentary rocks; can form in various geological environments.
Uses: Important ore of iron.
Dolomite
Composition: Calcium magnesium carbonate (CaMg(CO₃)₂).
Color: Usually white, gray, or pink.
Properties: Commonly forms in sedimentary environments; reacts with acid (but more slowly than calcite).
Uses: Used in construction, as a source of magnesium, and in the production of glass and ceramics.
Pyrrhotite
Composition: Iron sulfide (Fe₁₋ₓS, where x can vary).
Color: Bronze to golden yellow, often with a metallic luster.
Properties: Magnetic; can be found in igneous and metamorphic rocks.
Uses: Sometimes mined for its iron content and can occur with nickel deposits.