Stilpnomelane, K Feldspar (Var: Adularia)
Landsverk 1 Feldspar Quarry, Landsverk, Evje og Hornnes, Agder, Norway
3.2 x 2.5 x 1.9 cm. Stilpnomelane is an uncommon layered silicate. Lustrous, platy, microcrystals are richly scattered in the vuggy adularia matrix in clusters and isolated crystals. Ex. Howard Belsky Collection. Howard started as a mineral dealer at age 13 in 1972, became a sophisticated dealer and died tragically at age 28 in 1987.
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