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Formula: MgB3O3(OH)5.5H2O
Hydrated triborate, inderite group,
monoclinic
paramorph of triclinic
kurnakovite
Crystal System: Monoclinic
Specific gravity: 1.80 measured, 1.794 calculated
Hardness: 3
Streak: White
Colour: Colourless, white, pink, colourless in transmitted light
Solubility: Insoluble in water, readily soluble in warm, dilute hydrochloric acid
Environments
Inderite occurs rarely as a primary mineral in lacustrine
borate deposits
(HOM).
Localities
At the Brosso Mine, Calea, Lessolo, Metropolitan City of Turin, Piedmont, Italy, inderite has been found
(Mindat photo).
Inderite from the Brosso Mine - Image
At the type locality, Deposit No. 7, Mt Kzyl-tau, Inder B deposit and salt dome, Inder, Atyrau Region, Kazakhstan, inderite is found as
small, white to pink nodules disseminated in a brick-red clay and associated with
hydroboracite. The clay is composed of
quartz, calcite and hydrous basic magnesium carbonate
(AM 31.71, HOM).
At the Sarıkaya B deposit, Kirka, Seyitgazi District, Eskişehir Province, Turkey, inderite is associated with
kurnakovite
(HOM).
At Boron, Kern county, California, USA, inderite is associated with borax,
ulexite, orpiment and
realgar
(HOM).
Inderite from Boron - Image
At the Jenifer Mine, U.S. Borax Mine, Kramer Borate deposit, Boron, Kern county, California, USA, inderite is associated with
borax, ulexite and
realgar
(AM 41.927-928 as lesserite).
Inderite from the Jenifer Mine - Image
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