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CC62817

GOETHITE ps. after GYPSUM

GOETHITE ps. after GYPSUM

Size:
65 x 104 x 106 mm
Weight:
380 g
£1,119.00 GBP
£1,119.00 GBP
Sale Sold out
Taxes included. Shipping calculated at checkout.

Item held in the UK store
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Detailed information

Dimensions 65 x 104 x 106 mm
Weight 380 g
Locality Lavrion District Mines Lavrion District Attikí Prefecture, Greece
Condition No recorded repairs

I have seen many weird and wonderful mineralogical associations over the years but this one is certainly high of the list of oddities. It comes from the Lavrion District mines in Attikí Prefecture, Greece and is visually dominated by two large rounded, almost cylindrical dark brown, to black blades, crossing in the middle. This though is only part of the story. Reputedly, these are Goethite pseudomorphs after Gypsum var. Selenite, and under magnification it can be seen that their surfaces are made up of hundreds of hollow epimorphs of Goethite after monoclinic bladed crystals of presumed Selenite. Then, bright, snow-white 'flowers' of small rhombic Calcite crystals are sparsely scattered upon the surface and under magnification these same surfaces are richly studded with tiny cubic microcrystals of almost colourless, but colour-zoned Fluorite crystals. Added to this, some of the Goethite is iridescent, providing an addition flash of colour. A remarkable Greek mineralogical assemblage. It is mounted on a clear acryllic cube for display but can easily be removed if required.

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