alaskiten.
/əˈlaskʌɪt/, U.S. /əˈlæskaɪt/ Geology.
A pale variety of granite consisting predominantly of alkali feldspars and quartz.
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the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > plutonic rocks > granite > varieties of
moorstone1461
silver stone1758
granitell1794
granitoid1794
rapakivi1794
ophthalmite1811
protogine1823
pegmatite1824
potash-granite1845
beresite1849
granitite1875
greisen1878
trowlesworthite1884
microgranite1888
charnockite1893
alaskite1900
Dartmoor granite1904
plagiogranite1959
1900 J. E. Spurr in Amer. Geologist 25 229 The general plan of the classification of feldspar rocks being explained, it remains only to treat of a mineralogic group now proposed for the first time, that of alaskytes... The alaskyte group is a distinct mineral group, consisting of quartz and alkali feldspar only, and in this sense it is quite new and so a new name is given.
1900 Jrnl. Geol. (Chicago) 8 644 Here the granite and alaskite..are evidently younger than and at times intrusive into a great body of biotite-hornblende quartz-monzonite.
1940 C. F. Passel Diary 30 Nov. in Ice (1995) 328 P[ea]k 232 is granite with a series of dikes (basalt) running N 70 W, and the north end is all aplite and alaskite.
1990 K. S. Robinson Pacific Edge (1992) 86 They trod over shattered fields of dark Lamark granodiorite, and then over bands of the lighter alaskite.
2009 E. S. Cheney & N. W. Hayman in J. E. O'Connor et al. Volcanoes to Vineyards ii. 45/2 This alaskite is a weakly foliated quartz and feldspar rock with a trace of biotite.
This is a new entry (OED Third Edition, September 2012; most recently modified version published online December 2021).
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n.1900