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 around the world including areas 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.
Specimen Details
Chemical Formula: NaMg3Al6(BO3)3Si6O18(OH)3F
Collection ID #: JG0001
Colour: Brownish-black, brown, dark orange-brown.
Hardness: 7 – 7.5
Acquisition Date: 6th August 2016
Crystal System: Trigonal
Lustre: Vitreous, resinous, dull
Dimensions: 43mm x 33mm x 35mm
Weight: 96g
Locale: May Downs Station, Mt Isa QLD, Australia.
Rarity of Mineral
Did you know!?
It can at times be hard to make an exact distinction between the minerals dravite and uvite.