Thursday, 27 September 2007

Mineral Spot: Vesuvianite...

Vesuvianite is a calcium magnesium aluminium silicate mineral that is most likely found in contact metamorphic rocks (usually a limestone that has been 'cooked' by igneous rocks). It is usually a brownish-green colour but at the Jeffrey mine in Quebec, Canada, can occur as purple or pinkish crystals. This specimen is from the Jeffrey mine and shows an interesting colour-zoning.

It is also one of the specimens coming up in a lot in this week's auction.

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