Sphene

Definitions

  • Webster's Revised Unabridged Dictionary
    • n Sphene (Min) A mineral found usually in thin, wedge-shaped crystals of a yellow or green to black color. It is a silicate of titanium and calcium; titanite.
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Century Dictionary and Cyclopedia
    • n sphene The mineral titanite. The transparent green, greenish-yellow, or yellow varieties frequently exhibit a play of colors as brilliant as that of the yellow or green diamond, showing a strong refractive and dispersive power on light. It is quite soft, the hardness being only 5.5. See titanite.
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Chambers's Twentieth Century Dictionary
    • n Sphene sfēn titanite.
    • Sphene a soft greenish mineral often present in syenite
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Etymology

Webster's Revised Unabridged Dictionary
F. sphène, fr. Gr. sfh`n a wedge

Usage

In literature:

Among these were the Siberian and Brazilian topaz, borate of magnesia, mesotype, sphene, and calamine.
"Catholic Churchmen in Science" by James J. Walsh
The iron oxides, originally ilmenite, are usually altered to sphene.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6" by Various
Jargoon, or zircon, has also a high index (mean 1.95), and sphene, which is occasionally cut as a gem, is likewise very notable in this respect.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5" by Various
Reddish grains of sphene or of garnet are occasionally visible.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3" by Various
Among other minerals found in them are biotite and chlorite, tourmaline, epidote, apatite, garnet, hornblende and augite, sphene, pyrites.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 5" by Various
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