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specimens may stain surfaces or leave residue when handled
Another is tipped with metallic radial growth
They have a yellowish coloration under the surface with some transparency
brittle crust which may make them susceptible to fracturing as part of normal geological processes
in the case of Option F
Chocolate dogtooth calcite, large Ferruginous quartz specimens may stain surfaces orLocale: Santa Eulalia, Chihuahua, Mexico Approx size: 3. 75 x 2. 25 x 2. 25" Approx weight: 485g (about 1 lb) 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 brown appearance from iron oxides; a layer of hematite included calcite is deposited on the surface during a later
