Orthoclase, or orthoclase feldspar (endmember formula K Al Si 3 O 8), is an important tectosilicate mineral which forms igneous rock. The name is from the Ancient Greek for …

Orthoclase is a feldspar mineral with a chemical composition of KAlSi 3 O 8. It is one of the most abundant rock-forming minerals of the continental crust. Orthoclase is most widely known as …

2023年4月23日 · An important rock-forming mineral, orthoclase is the potassium-bearing end member of the potassium sodium feldspar solid-solution series. It is a major component of …

正长石（英語：Orthoclase)，是钾长石（KAlSi 3 O 8 ）的亚稳相变体 [2] ，是不可溶性钾盐 矿物。其理论成分为：SiO 2 （64.7%）、Al 2 O 3 （18.4%）、K 2 O（16.9%） [3] 。钾长石结 …

Orthoclase is one of the most common minerals, and occurs in numerous mineral environments. It is polymorphous with the minerals Microcline and Sanidine . These three minerals form the …

Orthoclase is the most common member of the series, being the dominant K-feldspar in most granite, granitic rocks and other plutonic rocks, with an intermediate cooling regime. Despite …

Intrusive and extrusive igneous, and metamorphic rocks. Common world wide occurrences. Link to MinDat.org Location Data. From the Greek orthos - "right" and kalo -" I cleave" in allusion to …

Orthoclase, common alkali feldspar mineral, a potassium aluminosilicate (KAlSi3O8); it usually occurs as variously coloured, frequently twinned crystals in granite. Orthoclase is used in the …

2014年6月20日 · Orthoclase (endmember formula KAlSi 3 O 8) is an important tectosilicate mineral which forms igneous rock. The name is from the Greek for “straight fracture,” because …

Occurrence: The common feldspar of granites, granite pegmatites, and syenites. In cavities in basalts; in high-grade metamorphic rocks and as a result of potassic hydrothermal alteration; …