Dravite from May Downs Station, Mt Isa QLD
Dravite is a relatively common form of Tourmaline commonly referred to as “Brown Tourmaline”.
Dravite can be found in localities such as Dobrova, Dravograd, Slovenia where some spectacular museum grade pieces have been found.
I acquired this specimen from Greg at Blue Gems at the August 2016 Sydney Crystal Show.
Chemical Formula: NaMg3Al6(BO3)3Si6O18(OH)3F
ID #: JG0001
Colour: Brownish-black, brown, dark orange-brown.
Hardness: 7 – 7.5
Acquisition Date: 06/08/2016
Crystal System: Trigonal
Lustre: Vitreous, resinous, dull
Dimensions: 43mm x 33mm x 35mm
Location: May Downs Station, Mt Isa QLD, Australia.
Rarity of Mineral