Adanite

adanite

northstarite

plumbogummite

zincospiroffite

Images

Formula: Pb2(Te4+O3)(SO4)
Sulphate of lead and tellurium
Specific gravity: 6.385 calculated
Hardness: 2½
Streak: White
Colour: Beige, colourless
Luminescence: Not fluorescent under long or short wave UV
Solubility: At room temperature, very slowly soluble in dilute hydrochloric acid, and rapidly soluble in concentrated hydrochloric acid
Environments

Hydrothermal environments

Adanite is a relatively new mineral approved in 2019.

Localities

At the Joe mine, Tombstone Mining District, Cochise County, Arizona, USA, adanite has been confirmed in a specimen that was originally labelled only as frohbergite. On this specimen, adanite occurs as white massive crystalline aggregates on small euhedral jarosite crystals that coat the surface of the matrix. frohbergite is found in veins in the matrix, and rodalquilarite is also found on the specimen. Adanite is an oxidation-zone mineral (CM 58.3.403-410).

At the type locality, the North Star Mine, Mammoth, Tintic Mining District, Juab County, Utah, USA, the mine exploited a polymetallic gold-silver-copper-lead vein deposit emplaced in contact-metamorphosed dolostone and was the largest producer of gold in the Tintic district. The principal ore minerals were galena, cerussite and enargite, and the prominent gangue minerals were quartz and baryte. A wide variety of oxidation-zone minerals has been collected from the mine dumps. The adanite is known from only one small specimen. It occurs in a vug in massive quartz-baryte-enargite-pyrite. Other secondary minerals found in association with adanite are anglesite, azurite, chrysocolla, fluorapatite, northstarite, plumbogummite, tellurite, zincospiroffite, and an unidentified poorly crystalline copper-tellurite. Adanite is an oxidation-zone mineral, forming beige coloured wedge-shaped blades up to about 1 mm in length (CM 58.3.403-410).

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