A variety of opal, of concretionary form, found deposited about the orifices of geysers.
| 单词 | θ7026 |
| 释义 | the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > quartz > amorphous quartz or opal > geyserite (2) geyserite1814 A variety of opal, of concretionary form, found deposited about the orifices of geysers. pealite1873 A variety of geyserite with an unusually low water content (around 1.5 per cent). |
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