Orthoclase - Wikipedia
网页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 "straight fracture", because its two cleavage planes are at right angles to each other.
科学网—矿物学百科： 正长石（Orthoclase）和斜长 …
网页2024年4月19日 · 正长石（Orthoclase Feldspar）： 属于碱性长石，主要成分为K [AlSi3O8]，即钾铝硅酸盐。 在岩石学中，它是酸性火成岩（如花岗岩和流纹岩）的主要矿物成分之一。 根据其内含微量元素的不同，正长石可以呈现不同颜色，如粉红、黄色、褐色或无色。 正长石有时会被制成珠宝，例如著名的宝石品种日光石（Sunstone）和月光石（Moonstone）。 （钾长石和正长石实际上是同一类矿物。 正长石是一种钾长石，其化 …
Orthoclase: Pink granite, Mohs hardness and moonstone - Geology.com
网页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 the pink feldspar found in many granites and as the mineral assigned a hardness of "6" in the Mohs hardness scale. ADVERTISEMENT. Uses of Orthoclase.
正長石 - 维基百科，自由的百科全书
网页正长石 （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]。 钾长石结构态为低正长石，其次为中正长石，少数为中微斜长石。 [4] 性质. 钾长石一般呈肉红色、黄白色、呈白色或灰色，晶体常呈短柱状或厚板状，有玻璃光泽，比重为2.56， 莫氏硬度 为6， 熔点 1290℃。 [5] 种类. 月光石，产地 斯里兰卡. 正长石有两个 同质多象变种： …
Orthoclase Mineral Physical-Optical Properties, Uses, Occurrence
网页2023年4月23日 · Orthoclase is the potassium-bearing end member of the potassium sodium feldspar solid-solution series. It is a major component of granite its pink crystals
The Mineral orthoclase - The Mineral and Gemstone Kingdom
网页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 Potassium Feldspar group .
正长石 - 百度百科
网页简介. 播报. 编辑. 化学成分K [AlSi3O8]，其中K2O为16.90%，Al2O3为18.4%，SiO2为64.7%，常含有钠长石Na [AlSi3O8]，有时达30%，并常有铁、钡、铷、铯等混入。 单斜晶系。 晶体呈短柱状或厚板状，常见双晶为卡斯巴双晶，有时呈粒状或块状集合体。 呈肉红、浅黄白、浅黄红色。 玻璃光泽。 两组完全解理。 硬度6，比重2.57。 主要产于中、酸性和碱性岩浆岩、各种片麻岩、混合岩中。 风化后变为高岭土。 用于作绝缘电瓷和瓷器釉药的材 …
Orthoclase | Feldspar, Silicate, Mohs Scale | Britannica
网页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 manufacture of glass and ceramics; occasionally, transparent crystals are …
Orthoclase Mineral Data
网页Empirical Formula: KAlSi 3 O 8. Environment: Intrusive and extrusive igneous, and metamorphic rocks. IMA Status: Valid Species (Pre-IMA) 1823. Locality: Common world wide occurrences. Link to MinDat.org Location Data. Name Origin: From the Greek orthos - "right" and kalo -" I cleave" in allusion to the mineral's right angle of good cleavage.
Orthoclase | NOVA Mineralogy - nvcc.edu
网页Orthoclase is frequently known as potassium feldspar or K-spar, and is easily distinguished from the plagioclase feldspars in hand sample by its lack of striations. In thin section, alkali feldspar grains often look like they’re sprinkled with dirt (PPL) or tiny confetti (XPL).