An aluminosilicate mineral resembling talc, occurring as white or pale-coloured foliated masses which exfoliate when heated.
| 单词 | θ6959 |
| 释义 | the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > pyrophyllite (2) pyrophyllite1830 An aluminosilicate mineral resembling talc, occurring as white or pale-coloured foliated masses which exfoliate when heated. pencil stone1868 pyrophyllite or a similar material used to make slate pencils. |
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