Black tourmaline Blue aragonite I suspect the black mineral

I suspect the black mineral could be poorly-formed specularite hematite

Approx weight: 650g (1

some with a slight smoky-quartz tint

you can see inverted striated patterns

There is a small amount of white hyalite near the base of the specimen on one side

Black tourmaline Blue aragonite I suspect the black mineralLocale: Erongo Mountain, Namibia Approx dimensions: 3 x 2. 5 x 2. 5" Approx weight: 287g ** Loose piece on base This statuesque piece of black tourmaline, known as schorl, has the mercedes termination and glossy high luster characteristic of the Erongo region. The piece is effectively three intergrown crystals in a stepped formation, with partial crystals attached at one end. The sides are beautifully striated on the partial crystals, with more