Orthoclase: Pink granite, Mohs hardness and moonstone - Geology.com
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. Orthoclase has several commercial uses.
Orthoclase Mineral Physical-Optical Properties, Uses, Occurrence
Apr 23, 2023 · 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.
Orthoclase Mineral Data
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 the mineral's right angle of good cleavage. Comments: Striated, dark violet crystal of lorenzenite in cream-colored orthoclase.
Orthoclase | Feldspar, Silicate, Mohs Scale | Britannica
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 cut as gems.
The Mineral orthoclase - The Mineral and Gemstone Kingdom
Detailed description, properties, locality information guide about the potassium feldspar mineral orthoclase and adularia.
Orthoclase: Mineral information, data and localities. - mindat.org
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 the enormous number of reports of orthoclase in granite pegmatite s, …
The 12 Different Types Of Feldspar (With High-Quality Photos)
Jan 26, 2024 · Orthoclase is a type of feldspar that’s known for its beautiful crystals. It’s mainly made up of potassium, aluminum, and silicate, which give it some interesting properties. This mineral can be found in a range of colors, from colorless and white to shades of pink and red.
Orthoclase thin section - Tectosilicates - MicROCKScopic
Orthoclase thin section photomicrographs are taken in plane-polarized light and cross-polarized light, and can easily be recognized under the microscope.
Orthoclase Feldspar Gem Guide and Properties Chart
This Orthoclase Feldspar gemstone guide lists qualities of the Orthoclase Feldspar gem type, including stone colors, common names, meanings, gemstone hardness and more.
Twinning: Common as simple, contact, or penetration twins according to the Carlsbad, Baveno, or Manebach laws. Physical Properties: Cleavage: Perfect on f001g and partings on f110g, and Fracture: Conchoidal to uneven. Tenacity: f010g; f100g, f110g, Brittle. Hardness = 6{6.5 D(meas.) = 2.55{2.63 f201g. Optical Properties: Transparent to translucent.
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