Rio Tinto Borax open pit, Rio Tinto Borax Mine, Kramer Borate deposit, Boron, Kern County, California
Miniature - 5.1 x 4.3 x 3.8 cm
92 grams
Ex Carol and Ed Headley
Specimen status: Reserved
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A glassy, polycrystalline tunellite
crystal from the huge Rio Tinto Borax
open pit. Tunellite is a globally rare strontium
borate - SrB6O9(OH)2ยท3H2O,
for which Mindat lists only
eleven confirmed localities. Ex Carol and Ed Headley
collection. Complete all around and in excellent
condition.
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