Home > Pseudomorphs – March 10 > MS1780 Hematite coating Dolomite after Calcite
Hematite coating Dolomite after Calcite - Sold
- Freiberg
- Erzgebirge (Ore Mountains)
- Sachsen (Saxony)
- Germany
- 7.8 × 5.6 × 4.1 cm – Small cabinet specimen (under 10 cm)
Calcite and dolomite are two carbonate minerals, calcite contains primarily calcium while dolomite has both calcium and magnesium. Dolomite has less symmetry than calcite as a result of atomic ordering.
This specimen consists of scalenohedral crystals to 4 cm, originally formed in calcite, are now replaced by dolomite. This is a common pseudomorph in ore deposits. Specular hematite has covered the pseudomorphs, making for a very attractive specimen. From a classic locality. This specimen was part of the Charles Trantham (1936-2020) estate and comes with a Geologisch Centrum (Ootmarsum, Netherlands) label.