Berborite
Borate mineral
Berborite is a beryllium borate mineral with the chemical formula Be2(BO3)(OH,F)·(H2O). It is colorless and leaves a white streak. Its crystals are hexagonal to pyramidal. It is transparent and has vitreous luster. It is not radioactive. Berborite is rated 3 on the Mohs Scale.
Berborite occurs in 1T, 2T, 2H polytypes.
It was first described in 1967 for an occurrence in the Lupikko Mine, Ladoga Region Karelia Republic, Russia. It has also been reported from Tvedalen, Larvik, Vestfold, and Siktesøya Island, Langesundsfjord, Porsgrunn, Telemark, Norway. It occurs in serpentine altered dolomite in association with skarn enriched in tungsten, strontium, beryllium and boron in the Karelia occurrence and in vugs with natrolite and thomsonite in Norway.
Sources and credits
This article is adapted from the Wikipedia article “Berborite”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Berborite & Natrolite.jpg by David Hospital, CC BY-SA 4.0
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