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Comments: Massive, translucent nahcolite.
Location: Anvil Point, Rifle, Garfield County, Colorado, USA.
Scale: 2.1 x 1.4 cm.
© John Veevaert
Nahcolite: NaHCO3 Trona: Na3(CO3)(HCO3)·2(H2O)
Comments: Massive, coarse-grained Trona from a drill core of the upper mixed-layer Saltbed. White areas are nahcolite alteration.
Location: Searles Lake, San Bernardino County, California, USA.
Scale: 12 x 15 cm.
© Dave Barthelmy