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Recently discovered Diaspore from Ghosta Afghanistan origin
Info( reference, honourable teacher, Hamid Usman, gemological lab CIGTL at Mindat. Org)
Diaspore, the new addition in Afghanistan minerals
The main area of the deposit in Goshta, Jalalabad, Afghanistan (near hydrogrossllar mines in Goshta).
The color of the stuff is mauve(pale purple) mostly crystals are broken but in good size and clarity (for lapidary) observed.
I do not observe any color change material but in incandescent light the mauve color slightly changes in lavender (which is the same version of purple with bright color )
The material is strongly pleochroic.
