Offered here for sale is a good complete copy of
ANDESITE CONFERENCE GUIDEBOOK edited by Hollis M. Dole. Portland: Oregon State Dept. of Geology and Mineral Industries Bulletin 62, 1968. 11" X 8 1/4", pp iii + 107 with numerous photos, figures and colored geological maps; original pictorial wrappers. Previous owner's name whited out on front cover else near very good. Not ex-library. Nicely illustrated set of abstracts for this conference covering the McKenzie Pass Area, the Crater Lake Area, the Newberry Caldera Area, Mt. Hood Area and a paper on Andesite Petrochemistry describing the Cascade andesite volcanoes.
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Phenakite Micro Specimen, 8 carats, Klein Spitzkoppe Area, Namibia
Phenakite (Be2SiO4)
Weight: 8 ct
Height: 2 cm
Nharo travelled to the Klein Spitzkoppe area and worked with small scale miners to collect these crystals.
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Phenakite Micro Specimen, 8 carats, Klein Spitzkoppe Area, Namibia
Phenakite (Be2SiO4)
Weight: 8 ct
Height: 2 cm
Locality: Stiepelmann Mine, Klein Spitzkoppe Area, Karibib District, Erongo Region, Namibia
This Phenakite, sometimes called Phenacite, comes from the Klein Spitzkoppe pegmatites at the long closed Stiepelmann mine.
Phenakite is a rare mineral found in a few localities around the world. Nharo worked with small scale miners to enter the mine and were able to acquire some noteworthy specimens.
Phenakite is a silicate with a hexagonal crystal structure. Named after Phenax, a Greek word meaning deceiver, because of a strong similarity to quartz. Close examination will reveal vertical striations on the crystal where on quartz they are horizontal. Phenakite is harder than quartz at 7 to 8 on the Mohs scale and when cut displays a brilliance that is just short of diamond.
Nharo has been collecting mineral specimens in Southern Africa since 2002. We focus on bringing a wide variety of unusual, beautiful and energetic minerals back home with us!