Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A rare type of ultramafic intrusive rock, consisting primarily of olivine and calcic plagioclase

from The Century Dictionary and Cyclopedia

  • n. In petrography, a name given by von Lasaulx (1875) to a variety of gabbro composed of lime-soda feldspar and olivin, with a little diallage. Bonney has applied the name especially to the more or less serpentinized forms. Compare forellenstein.

Etymologies

From German Troktolit (Wiktionary)

Examples

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