Originally: a non-crystalline or fibrous form of apatite. Now: any sedimentary rock containing a high proportion of calcium phosphate.
| 单词 | θ7189 |
| 释义 | the world > the earth > minerals > types of mineral > phosphates > [noun] > phosphate of lime or apatite (14) phosphorite1794 Originally: a non-crystalline or fibrous form of apatite. Now: any sedimentary rock containing a high proportion of calcium phosphate. apatite1803 A native crystallized phosphate of lime, varying in colour from white to green, blue, violet, brown; transparent, translucent, or opaque. Subcategories:— varieties (12) |
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