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Description

Chocolate dogtooth calcite, largeLocale: Santa Eulalia, Chihuahua, Mexico Approx size: 5 x 3 x 1. 75" Approx weight: 372g Known by the trade name "chocolate dogtooth calcite," this type of calcite from the famed Santa Eulalia mining district grows in hedgehog clusters of sharp dogtooth (scalenohedral) crystals. The variety gets its distinctive opaque dark brown appearance from iron oxides; a layer of hematite included calcite is deposited on the surface during a later phase of

Locale: Imilchil

Approx weight: 60-110g

Approx weight: 225g

Spherical black inclusions are visible inside

there are fine parallel lines composed of spot-like green inclusions

the piece has been rotated to show the most off-square angle

Approx weight: 212g

The iron oxide staining is golden yellow with a red patch in the center

The hyalite on this specimen has relatively small spheres

Approx weight: 383g

This one has the typical coloration on one side

There are a few patches of broken crystals on the surface