Braunite (Braunite II) with Andradite
- N'Chwaning II mine
- Kalahari Manganese Field
- Northern Cape Province
- South Africa
- 4.6 by 3.5 by 1.7 cm – Miniature specimen (fits into a 5 cm cube)
Braunite is a manganese oxide / silicate mineral with tetragonal symmetry. Haidinger (1828) named the mineral after Kammerrath Braun of Gotha, Germany. Moore & Araki (1976) studied braunite, confirmed its tetragonal symmetry, and showed a relationship with bixbyite. De Villiers (1980) showed that some braunite crystals have a doubled unit cell, and these are different from the original braunite. This is such a specimen, known as Braunite II, with striated steep pyramidal crystals to 6 mm, overlain partly by orange-red andradite crystals. Attractive. This specimen ships with a Clive Queit label.
Item code: MS0899
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