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and can be colorless to semi-translucent white with inclusions
and small dark spots nearby
or spots under magnification (you can see it if you zoom in on close shots
Locality: Mexico
The two larger points are tipped with bubbly black hematite
Chocolate dogtooth calcite, large Stalactitic chalcedony and can be colorless toLocale: 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
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