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Mineral Specimen #5467    Fluorite on and within Quartz Pseudomorphs after Calcite Coated with Montromite

Prospectors Delight Mine (Black Knife Mine), Cuchillo Negro Dist., Sierra Cuchillo, Sierra Co., New Mexico

10.8 x 7.2 x 6.5 cm
4.3 x 2.8 x 2.6 in

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Quite unusual Quartz pseudomorphs after Calcite, it appears the Quartz formed a thin layer over the Calcite which was subsequently dissolved by acidic fluids. This left hollow casts after Calcite many of which are incomplete allowing a view into the interior. Orange/brown colored microcrystals of Mottramite grew upon the surfaces of the cases. Pale green, crudely formed octahedral Fluorite crystals on the surfaces and in the interiors of the casts.

Condition: Good

Flaws: There are a number of broken surfaces on the Quartz pseudomorphs.

This mineral is also found in the following galleries: Minerals From the United States | Fluorite | Quartz | Phosphates | Pseudomorphs | Minerals Priced Between 100 and 199 Dollars

This mineral is also found in the following galleries: Minerals From the United States | Fluorite | Quartz | Phosphates | Pseudomorphs | Minerals Priced Between 100 and 199 Dollars