Specimen #1815

Name: Muscovite on Schorl

Type: Mineral

Locality: Erongo Mountain, Usakos and Omaruru Districts, Erongo Region, Namibia

Favorite? N

Fluorescent? N

Size: 6.4 x 5.6 x 3 cm

Weight: 75

Acquired: 2009-12-17

Source: Arkenstone Auction

Label: N

Comment: Uncommon, and very attractive, specimen of vivid yellow Muscovite crystals growing on crystals of Schorl. The .5 cm Muscovites have lusters that range from velvety to classic adamantine, and their growth along the Schorl crystals (which range up to 2.5 cm) is complete all around. Many of the tips of the Schorls have been broken off, but that actually allows you to see the geometry of the growth. An unusual, and aesthetic, piece.

Minerals: Muscovite (KAl₂(Si₃Al)O₁₀(OH,F)₂) Schorl (NaFe⁺⁺₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

There is one picture on file

M01815-01.jpg:

Muscovite on Schorl, Erongo Mountains, Erongo Region, Namibia - 6.4 x 5.6 x 3 cm