harmotomen.

/ˈhɑːmətəʊm/

Forms: Also irregular harmotone.

Etymology: < French harmotome (Haüy), < Greek ἁρμός joint + -τομος cutting; apparently in reference to the fact that the octahedron divides parallel to the plane that passes through the terminal edges.

Mineralogy.

A hydrous silicate of aluminium and barium, commonly occurring in cruciform twin crystals of various colours. Also called cross-stone.

ΘΚΠ

the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspar > harmotome

cross-stone1770

staurolite1794

harmotome1804

1804 R. Jameson Syst. Mineral. I. 222 Cross-stone..Harmotome. Haüy.

1851 G. F. Richardson Geol. (1855) ii. 25 An especial value was assigned to the mineral harmotome, or cross-stone, on account of the sacred emblem of which it was supposed to be the type.

1881 Cassell's Pop. Educ. VI. 333 Harmotone..being frequently found in twin crystals or macles, so regular as to form in section a Maltese cross.

This entry has not yet been fully updated (first published 1898; most recently modified version published online June 2022).

单词	harmotome
释义	harmotomen. /ˈhɑːmətəʊm/ Forms: Also irregular harmotone. Etymology: < French harmotome (Haüy), < Greek ἁρμός joint + -τομος cutting; apparently in reference to the fact that the octahedron divides parallel to the plane that passes through the terminal edges. Mineralogy. A hydrous silicate of aluminium and barium, commonly occurring in cruciform twin crystals of various colours. Also called cross-stone. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspar > harmotome cross-stone1770 staurolite1794 harmotome1804 1804 R. Jameson Syst. Mineral. I. 222 Cross-stone..Harmotome. Haüy. 1851 G. F. Richardson Geol. (1855) ii. 25 An especial value was assigned to the mineral harmotome, or cross-stone, on account of the sacred emblem of which it was supposed to be the type. 1881 Cassell's Pop. Educ. VI. 333 Harmotone..being frequently found in twin crystals or macles, so regular as to form in section a Maltese cross. This entry has not yet been fully updated (first published 1898; most recently modified version published online June 2022). < n.1804
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