Minerals identify

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Dickite

Phyllosilicates,kaolinite-serpentine group

Dickite (Al 2Si 2O 5(OH) 4) is a phyllosilicate named after the metallurgical chemist Allan Brugh Dick, who first described it. It is chemically composed of 20.90% aluminium and 55.78% oxygen. It has the same composition as kaolinite, but with a different crystal structure (polymorph). Dickite sometimes contains impurities such as titanium , iron and potassium

Dickite occurs with other clays and requires x-ray diffraction for its positive identification. Dickite is an important alteration indicator[clarification needed systems as well as occurring in soils and shales.

Dickite's type location is in Pant-y-Gaseg, Wales Dickite appears in locations with similar qualities and is found in China , France, United States and Canada

Identification

Color of mineral

White

Mohs scale ( mineral hardness )

1.5

Density ( specific gravity )

1.561
1.561
1.566

Luster ( interacts light )

Pearly

Crystal ( diaphaneity )

Monoclinic