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MD-187665 - Tincalconite, Hanksite - - Archived Searles Lake, San Bernardino Co., California, USA small cabinet, 8.0 x 6.0 x 5.5 cm.
8.0 x 6.0 x 5.5 cm. A superb combination specimen of rare species from Searles Lake, California and the Jim Minette Collection. A pristine, doubly terminated, sharply hexagonal, translucent hanksite crystal is aesthetically capped by snow-white tincalconite pseudomorphing a very blocky borax crystal. Hanksite is a rare sulfate and tincalconite is a rare borate. Searles Lake is the Type Locality for both species.
MD-238943 - Tincalconite, Borax - - Archived U.S. Borax open pit (Boron pit), U.S. Borax Mine (Pacific West Coast Borax; Pacific Coast Borax Co.; Boron Mine; U.S. Borax and Chemical Corp.; Kramer Mine; Baker Mine), Kramer Bor small cabinet, 8.0 x 4.5 x 4.5 cm.
8.0 x 4.5 x 4.5 cm. A striking specimen of brilliant white pseudomorphs of tincalconite after sharp, tabular borax crystals from the Boron Pit of California. The large, doubly terminated pseudomorph is superbly surrounded by smaller crystals. An amazing specimen for such a soft mineral. Essentially pristine. Ex. Norm Dawson Collection.
MD-261775 - Tincalconite, Borax - - Archived U.S. Borax Mine (Pacific West Coast Borax; Pacific Coast Borax Co.; Boron Mine; U.S. Borax and Chemical Corp.; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer Distri small cabinet, 9.4 x 4.0 x 2.8 cm.
9.4 x 4.0 x 2.8 cm. A striking, very lightweight plate of a forest of tannish-white pseudomorphs of tincalconite after sharp, spiky, tabular borax crystals from the U.S Borax Mine of California. This is a highly representative specimen of this rare and very unusual pseudomorph. Excellent material from this famous district. They are so lightweight you really have trouble believing these are natural crystals, but they are. These are superb pseudomorphs. Ex. Mullane Collection.
MRZ137 - Meyerhofferite ps. Tincalconite - $ 150 SOLD Boron, California, USA small cabinet, 6.1 x 5.3 x 2.2 cm ex. Martin Zinn
Paper-light, chalky-white meyerhofferite has here replaced sharp crystals of tincalconite. Interesting pseudo from this classic old boron mining region! All Content and Design ©1996-2010 The ArkenstonePowered by http://mineralwebsites.comBy-species Galleries | ||||||||
