ఒక తెలుపు లేదా రంగు మోనోక్లినిక్ ఫెల్స్పార్,

orthoclase's Usage Examples:

malachite, merwinite,* monticellite, muscovite, okenite, opal, orthoclase, periclase, phlogopite, plazolite,* prehnite, pyrite, quartz, riversideite, scapolite.

It contains also orthoclase, nepheline, biotite, aegirine, acmite.

The first of these include: orthoclase (monoclinic) KAlSi 3O 8 sanidine (monoclinic) (K,Na)AlSi 3O 8 microcline (triclinic) KAlSi 3O 8 anorthoclase.

8 sanidine (monoclinic) (K,Na)AlSi 3O 8 microcline (triclinic) KAlSi 3O 8 anorthoclase (triclinic) (Na,K)AlSi 3O 8 Potassium and sodium feldspars are.

Trondhjemite is an orthoclase-deficient variety of tonalite with minor biotite as the only mafic mineral, named after Norway"s third largest city, Trondheim.

Its chemical formula is KAlSi3O8, which is polymorphic to orthoclase.

Orthoclase, or orthoclase feldspar (endmember formula KAlSi3O8), is an important tectosilicate mineral which forms igneous rock.

the current eruptive products of Erebus are anorthoclase-porphyritic tephritic phonolite and phonolite, which are the bulk of exposed lava flow on the.

is a fully ordered triclinic modification of potassium feldspar and is dimorphous with orthoclase.

commonly represented by orthoclase and the exsolved lamellar albite, form perthite.

minerals include quartz, orthoclase, talc, carbonate minerals and amphibole (actinolite).

pale-yellow, brick-red, or green; it is generally characterized by cross-hatch twinning that forms as a result of the transformation of monoclinic orthoclase into.

The presence of orthoclase indicates a petrogenetic difference with nepheline gabbros.