Saponite : Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2·nH2O
25mm x 25mm x 12mm
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“Light brown saponite pseudomorphs after stilbite crystals up to 6 mm. The pseudomorphs are arranged in a spray covering both sides of plate of matrix. No damage. Ex. A. Stevenson collection #148. Overall size of mineral specimen: 25x25x12 mm. Size of individual crystals: 2-6 mm.”
John Betts - 30th November 2000
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