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Mineral below orthoclase on the Mohs scale
Answer for the clue "Mineral below orthoclase on the Mohs scale ", 7 letters:
apatite
Alternative clues for the word apatite
Word definitions for apatite in dictionaries
Wikipedia
Word definitions in Wikipedia
Apatite is a group of phosphate minerals , usually referring to hydroxylapatite , fluorapatite and chlorapatite , with high concentrations of OH , F and Cl ions , respectively, in the crystal . The formula of the admixture of the four most common endmembers ...
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Apatite \Ap"a*tite\, n. [Gr. ? deceit, fr. ? to deceive; it having been often mistaken for other minerals.] (Min.) Native phosphate of lime, occurring usually in six-sided prisms, color often pale green, transparent or translucent.
Usage examples of apatite.
Inside the wet tissues of the body, the two chemicals react, and they precipitate hydroxyl apatite, a tough, rigid, natural constituent of actual human bone.
They located two roads, neither passable by now, one track leading to a shallow pit where many tons of apatite had been removed.
Canada it occurs with apatite in pyroxene rocks which are intrusive in Laurentian gneisses and crystalline limestones, the principal mining district being in Ottawa county in Quebec and near Burgess in Lanark county, Ontario.
Kemjawi as a byproduct of feldspar mining, and phlogopite at Siilinjarvi from an apatite mine.