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Photomicrograph of thin section of microcline showing crosshatched crystal twinning (in cross polarized light)
Photomicrograph of thin section of microcline showing crosshatched crystal twinning (in cross polarized light)
Image: Microcline 199473
Image: Microcline 199473
Feldspar (amazonite)
Feldspar (amazonite)
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Lithium aluminium silicate mineral spodumene
Lithium aluminium silicate mineral spodumene
Diatomaceous earth, a biogenic form of silica as viewed under a microscope. The imaged region measures approximately 1.13 by 0.69 mm.
Diatomaceous earth, a biogenic form of silica as viewed under a microscope. The imaged region measures approximately 1.13 by 0.69 mm.
Nesosilicate specimens at the Museum of Geology in South Dakota
Nesosilicate specimens at the Museum of Geology in South Dakota
Kyanite crystals (unknown scale)
Kyanite crystals (unknown scale)