A big, rich and rare American specimen - an intact pocket of hairlike acicular crystals of mesolite growing off balls of thomsonite (both minerals are hydrated sodium calcium aluminum silicate) from Oregon. This is another unique and hard-to-obtain piece that came out of the noted Hauck Collection. Not something you see around on the market, to be sure! 13.3 x 11.2 x 7.8cm
Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
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{{en|1=Mesolite, Thomsonite
:: Locality: Goble, Columbia County, Oregon, USA ([http://www.mindat.org/loc-4382.html Locality at mind