Black tourmaline Blue aragonite The crystal habit is actually

The crystal habit is actually 'pseudo-hexagonal' meaning the crystals that appear hexagonal are actually formed of multiple intergrown crystals (crystal 'twinning')

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

Locale: High Atlas Mountains

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

Approx weight: 650g (1

Black tourmaline Blue aragonite The crystal habit is actuallyLocale: 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