CREEDITE, FLUORITE and CHALCOPYRITE (most likely)

SPECIMEN NR #:846

$450.00 AUD

SALE ! TOO LATE, SOLD

846

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Creedite is a mineral composed of calcium, aluminum, sulfate, and fluorine, represented by the formula Ca3Al2SO4(F,OH)10·2(H2O). This mineral typically forms prismatic crystals that can be colorless, white, or purple, often appearing as delicate, acicular sprays of fine prisms. Its translucency to transparency is characterized by refractive indices of nα = 1.461, nβ = 1.478, and nγ = 1.485. With a Mohs hardness ranging from 3.5 to 4 and a specific gravity of 2.7, it is relatively soft and lightweight.

First identified in 1916 in the Creede Quadrangle of Mineral County, Colorado, creedite arises from the intense oxidation of ore deposits.

Fluorite, known as fluorspar, is the mineral variant of calcium fluoride, represented by the formula CaF2. This mineral is classified within the halide group and typically forms in an isometric cubic structure, though octahedral and other intricate isometric shapes can also be found. According to the Mohs scale of mineral hardness, fluorite is assigned a hardness value of 4, determined through scratch resistance comparisons.

Chalcopyrite not yet confirmed.

Specimen details

The numbers under "variant" are the measurements in mm and weight in grams. Where known, the origin of the specimen is mentioned. The number at the end, is the specimen number in our collection. Colours may vary, due to photography.

Care

It's important to know that many minerals can be effectively cleaned with water. However, before using any cleaning methods, such as dissolvers or ultrasound, please take the time to research online. Improper use of these techniques could potentially harm your specimen.

Shipping

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