Serpentinite
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Serpentinite is a metamorphic rock composed predominantly of serpentine group minerals formed by serpentinization of mafic or ultramafic rocks. The ancient origin of the name is uncertain; it may be f
Serpentinite from the Maurienne valley, Savoie, French Alps
Sample of serpentinite from the Golden Gate National Recreation Area, California, United States
Chromitic serpentinite (7.9 cm (3.1 in) across), Styria Province, Austria. Protolith was a Proterozoic-Early Paleozoic upper mantle dunite peridotite that has been multiply metamorphosed during the Devonian, Permian, and Mesozoic.
Tightly folded serpentinite from the Tux Alps, Austria. Closeup view about 30 cm × 20 cm (12 in × 8 in).
Chrysotile
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Chrysotile or white asbestos is the most commonly encountered form of asbestos, accounting for approximately 95% of the asbestos in the United States and a similar proportion in other countries. It is
Serpentinite
…ridges and in the forearc mantle of subduction zones. The final mineral composition of serpentinite is usually dominated by antigorite, lizardite, chrysotile (minerals of the serpentine subgroup), and magnetite (Fe3O4), with brucite (Mg(OH)2) less commonly present. Lizardite, chrysotile, and antigorite all…
Chrysotile 1
SEM photo of chrysotile
Chrysotile asbestos