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Birbirite

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A brownish rock derived from the hydration and silicification of dunite in the sequence dunite -> serpentinite -> birbirite.


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Classification of BirbiriteHide

Mineralogy of BirbiriteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Limonite(Fe,O,OH,H2O)
Silica > ChalcedonySiO2
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
ChromiteFe2+Cr3+2O4
Accessory minerals - these are minor components, often far less than 1% of the total mineral material:

References for BirbiriteHide

Reference List:
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Fettes (et al.), Metamorphic Rocks - A Classification and Glossary of Terms (2007) Cambridge University Press

Internet Links for BirbiriteHide

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