4]) extractant, the high amounts of Ca might be related to alteration of the mineral albite, which, compared to other minerals present in the modified biotite rock, such as quartz and microcline
, presents lower resistance to weathering according to the Goldich dissolution series.
1981): Relative alteration of microcline
and sodic plagioclase in semi-arid and humid climates.
Biotite and microcline
as potassium sources in ectomycorrhizal and non-mycorrhizal Pinus sylvestris seedlings.
Other non-clay minerals included microcline
, quartz, zircon, pyrite and hematite.
granite: A common, coarse-grained, light-colored, hard igneous rock consisting chiefly of quartz, orthoclase or microcline
, and mica; very dense and nonporous.
grains show characteristic cross-hatched twinning.
In the crater interior, the syn- or early post-impact formation of orthoclase-type potassium-feldspar replacing microcline
and plagioclase in the allochthonous and autochthonous breccias of the crater interior was the earliest process in the succession of impact-induced authigenic mineralization (Puura et al.
Leary-Alsip bricks contain quartz, microcline
and muscovite in contrast with the Stephen bricks, which contain diopside and quartz.
1986, Proterozoic sanidine and microcline
in pegmatite, Wausau complex, Wisconsin, Canadian Mineralogist, v.
Those researchers dated samples of a mineral called microcline
, pulled up during drilling in the 1950s.
66] A quaternary amine was used as a collector, following activation with hydrofluoric acid, the flotation of microcline
and albite being depressed by the addition of [K.