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RM3723   Muscovita and cleavelandite
KAl₂(AlSi₃O₁₀)(OH)₂
  -  9. Silicates

An exceptional specimen of muscovite composed of numerous aggregates of hexagonal crystals of this member of the mica group. Its yellowish-green color is very distinctive. Specimens of this type are rare, especially at this size. It is accompanied by albite, specifically the cleavelandite variety.

Size: 19 x 9.5 x 5 cm.
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RM1727   Elbaite

One of a very few tourmalines I found in this old collection with this classic combination from the 1960s or 1970s: nice brilliant lustre, glassy surface, intense color zoning between pink to green. Parallel groth, terminal rhombohedrons and a crossing prismatic pink small crystal between them. This well-known pegmatite mine was discovered in 1991 and produced very colorful tourmalines. Nice gem.

Size: 2.2 x 1.2 x 1.1 cm
Col. J.M. Manchion (Barcelona)
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