正長石
Also known as orthose
Orthoclase, or orthoclase feldspar (endmember formula KAlSi3O8), 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. It is a type of alkali feldspar, also known as potassium feldspar or K-spar. The gem known as moonstone (see below) is largely composed of orthoclase.
AI overview
Orthoclase is a common mineral found in igneous rocks that gets its name from its distinctive right-angled cleavage pattern, and it belongs to a family of minerals called feldspars. It's significant as a major rock-forming mineral and is also the main component of the gemstone moonstone.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Mineral.name
- Orthoclase
- Mineral.category
- Tectosilicate minerals
- Mineral.group
- Feldspar group
- Mineral.series
- Alkali feldspar series
- Mineral.boxtextcolor
- fff
- Mineral.boxbgcolor
- c6a289
- Mineral.image
- OrthoclaseBresil.jpg
- Mineral.imagesize
- 260
- Mineral.formula
- KAlSi3O8
- Mineral.IMAsymbol
- Or
- Mineral.IMAstatus
- Grandfathered (1801)
- Mineral.strunz
- 9.FA.30
- Mineral.dana
Article · 中文
正长石（英語：Orthoclase)，是钾长石（KAlSi3O8）的亚稳相变体，是不可溶性钾盐矿物。其理论成分为：SiO2（64.7%）、Al2O3（18.4%）、K2O（16.9%）。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。
Abstract from DBpedia / Wikipedia · CC BY-SA