Clipart tagged: ‘opaline silica’

"GEYSERITE. The variety of opaline silica deposited about the orifices of geysers. It occurs white or grayish, porous, in stalactitic, filamentous, or cauliflower-like forms." -Whitney, 1911

Geyserite

"GEYSERITE. The variety of opaline silica deposited about the orifices of geysers. It occurs white or…

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