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Hematite Scalenohedral On Calcite 332g
From Leiping , China
3.34" x 2.97" x 2.58"
Mu88
Bin W
The calcite often forms scalenohedral crystals, which are elongated, triangular-based shapes that resemble a double-ended spear or elongated pyramid. This form is sometimes referred to as "dogtooth spar" because of its resemblance to canine teeth.
Hematite, an iron oxide mineral, often appears as a metallic black or deep reddish-brown coating on the calcite. It may also occur as small, tabular or platy crystals on the calcite surface.