Definitions
from The Century Dictionary.
- noun A variety of granite occurring in the Alps.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) A kind of granite or gneiss containing a silvery talcose mineral.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geology A form of
granite containing silvery flakes oftalc or similar minerals
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
proto- + root of Ancient Greek to be born: compare French protogyne.
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Examples
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So much for the western line; in the Portillo pass, proceeding eastward, we meet an immense mass of conglomerate, dipping to the west 45 deg, which rest on micaceous sandstone, etc., etc., upheaved and converted into quartz-rock penetrated by dykes from the very grand mass of protogine (large crystals of quartz, red feldspar, and occasional little chlorite).
More Letters of Charles Darwin — Volume 1 Charles Darwin 1845
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To return to the marks of glaciation: in the moraine at Mazze there are many large blocks of protogine and large and small ones of limestone and serpentine which have been brought down from Monte
The Antiquity of Man Charles Lyell 1836
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