Gemmology
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Hematite — specimen 0407, photo © NMNHS
Hematite — specimen 0407, photo © NMNHS

Hematitespecimen 0407

Origin

East Africa
Tanzania
Hematite — specimen 0407, locality map
Data

Weight: 3.19 ct; size: 10.18 | 7.72 | 3.50 mm; shape: oval; colour: dark grey; clarity: opaque; cut: fair; treatment: none.
Notes

Clean specimen; mixed style cut.

Other specimens
Hematite — specimen 0031Hematite — specimen 0405Hematite — specimen 0440Hematite — specimen 0171

More information from ‘Classification’


An accessory mineral in felsic igneous rocks, a late-stage sublimate in volcanic rocks, and in high-temperature hydrothermal veins. A product of contact metamorphism and in metamorphosed banded iron formations. A common cement in sedimentary rocks and a major constituent in oolitic iron formations (Anthony et al., 2001—2005).