Noun:

ఫెన్నెల్, ప్రత్యేక మెటల్,

feldspar's Usage Examples:

With a further reduction in silica such that there is no feldspar these rocks become melteigites.

type of sandstone containing at least 25% feldspar.

coarse-grained igneous rock composed mostly of quartz, alkali feldspar, and plagioclase.

Associated minerals include garnets, vesuvianite, diopside, tremolite, epidote, plagioclase feldspar, pyroxene and calcite.

Most sandstone is composed of quartz or feldspar (both silicates).

50% platy and elongated minerals (such as micas or talc), often finely interleaved with quartz and feldspar.

Dynamic recrystallization of feldspar:.

rustication (architecture) The rock texture myrmekite is composed of vermicular worm–like intergrowths of quartz and feldspar.

Metavolcanic rock can contain the minerals quartz, feldspar, amphibole, pyroxene.

Arkose ( /ˈɑːrkoʊz/) is a detrital sedimentary rock, specifically a type of sandstone containing at least 25% feldspar.

They are thus distinguished from the porphyries and porphyrites in which the feldspar has crystallized in two generations.

Stoneham, Oxford County, Maine where it is associated with feldspar, smoky quartz, beryl and columbite.

rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspar.

Synonyms:

moonstone, felspar, oligoclase, silicon, plagioclase, orthoclase, atomic number 14, Si, spar,