Colemanite
Origin: U.S. Borax Open Pit, Boron, Kern Co., California, U.S.A.
Owner: Lou Perloff
Microscopic image
Photo-Atlas
of Minerals
Sample size: about 3 cm wide
Origin: U.S. Borax Open Pit, Boron, Kern Co., California
Owner: Milton Speckels
Microscopic image, 6.1 x
Origin: Corkscrew mine, Death Valley, Inyo Co., California
Owner: Milton Speckels
Sample size: about 4 cm
Photo-Atlas
of Minerals
Eaton Collection
Origin: Billie mine, Death Valley, California, United States
Sample size: 6 x 5 x 3 cm (top), 5 x 3 x 2.5 cm (2nd row), 6.5 x 6 x 3 cm (bottom)
Origin: Boron, Inyo Co., California, United States
Ex. DeVito collection
Sample size: 8 x 5 x 4 cm
This specimen has bladed crystals of colemanite to 1.2 cm in length which are
included with
orpiment.
The inclusions form sharp phantoms.
Origin: Boron, Kern County, California, U.S.A.
Sample size: 4 x 3.5 x 2.7 cm
John Veevaert, Trinity Mineral Co
Origin: Boron, California, U.S.A.
Sample size: 5.5 x 2.5 x 2.5 cm
Origin: Death Valley, Inyo County, California, U.S.A.
Ex Tom Dwyer and Gil Griffin collections
Sample size: 12 x 11 x 5.5 cm
Origin: Thompson Pit, Death Valley, California, U.S.A.
Ex. John Barlow collection
Sample size: 14.5 x 11 x 9.5 cm
Origin: Boron Open Pit, Boron, Kern Co., California, U.S.A.
Sample size: 7.2 x 4.6 x 3.9 cm
Origin: Boron, Kern Co., California, U.S.A.
Ex. Irv Brown collection
Sample size: 4.7 x 4.7 x 3.1 cm (left), 2.47 carats, 0.9 x 0.6 x 0.5 cm
(right)
Colemanite with twins
Origin: Mustafakemalpascha Mine , Western Anatolia Prov., Turkey
Sample size: 5.2 x 3.1 x 3.1 cm
Page 2
Page 3
Page 4
Page 5
Page 6
Page 7
Page 8
