Olivine Sand

Olivine and other grains. Le Tremblet Beach, Reunion Island, France.

Leo Kenney

   Olivine is named for its olive-green color. It is almost exclusively found in dark-colored igneous volcanic rocks such as basalt, gabbro and peridotite. It is especially common near volcanic oceanic islands like Hawaii, the Galapagos, and on Alaskan islands.

   Olivine is a common ortho-silicate mineral that is actually a mineral series, not a single mineral. Its iron and magnesium components can vary in proportion, substituting for one another in the crystal structure. This results in colors ranging from green to yellow green. Olivine tends to break down or weather quickly at the earth surface.

 

   Gem-grade olivine is known as peridot, the August birthstone. 

Papakōlea Beach
Papakōlea Beach

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Skeidararsandur
Skeidararsandur

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Ivgaq Huntiing Camp
Ivgaq Huntiing Camp

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Tahuata
Tahuata

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Playa el Golfo
Playa el Golfo

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Crystal Bay
Crystal Bay

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Saint Rose Beach
Saint Rose Beach

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Black Sand Beach
Black Sand Beach

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Umatac Bay
Umatac Bay

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Ladispoli
Ladispoli

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Arenal Volcano
Arenal Volcano

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Peridot Sand
Peridot Sand

San Blas Indian Reservation, Arizona