Specimen #435

Name: Poldervaartitentineite with bultfonteinite

Type: Mineral

Locality: N'chwaning II, Kalahari Managanese Field, Kuruman, South Africa

Favorite? N

Fluorescent? N

Size: 9.0 x 5.0 x 1.5 cm.

Weight:

Acquired: 2007-04-23

Source: Trinity: Giorgio Spiga

Label: N

Comment: A very attractive and interesting sample with a lot of fine cryatals on both sides. It features small creamy Poldervaartite crystals up to 8 mm and relatively large Bulfonteinite crystals up to more than 5 mm.

Minerals: Bultfonteinite (Ca₂SiO₂(OH,F)₄) Poldervaartite ((Ca,Mn⁺⁺)₂SiO₃(OH)₂)

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