Sharp, bright yellow Weloganite xl 8 mm tall set nicely on matrix with the typical layered prismatic shape.
Nice sample of this rare specie, from the type locality.
Formula :
Na2(Sr,Ca)2Zr[CO3]6 * 3 H2O
System: triclinic Hardness:3½ Rarity:rare
Strunz id:V/D.4-30 -
NITRATES, CARBONATES and BORATES
Name origin: Named after Sir William Edmond Logan (1798-1875), first director of the Geological Survey of Canada (1842-1870).
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 Specimen weight:50 gr.
 Crystal size:8 mm tall
 Overall size: 40mm x 23 mm x 43 mm
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