Information om | Engelska ordet FELDSPAR

Exempel på hur man kan använda FELDSPAR i en mening

• Amazonite, also known as amazonstone, is a green tectosilicate mineral, a variety of the potassium feldspar called microcline.
• In geology, felsic is a modifier describing igneous rocks that are relatively rich in elements that form feldspar and quartz.
• Kaolinite is a soft, earthy, usually white, mineral (dioctahedral phyllosilicate clay), produced by the chemical weathering of aluminium silicate minerals like feldspar.
• Most sandstone is composed of quartz or feldspar, because they are the most resistant minerals to the weathering processes at the Earth's surface.
• The most common members of the feldspar group are the plagioclase (sodium-calcium) feldspars and the alkali (potassium-sodium) feldspars.
• Most pegmatites are composed of quartz, feldspar, and mica, having a similar silicic composition to granite.
• Anorthoclase is an intermediate member of the high albite – sanidine alkali feldspar solid solution series.
• Rather than referring to a particular mineral with a specific chemical composition, plagioclase is a continuous solid solution series, more properly known as the plagioclase feldspar series.
• Amelia is known for its minerals, including the nation's best supply of amazonite, a green feldspar found at the Morefield mine.
• It is nearly pure calcite marble with minor inclusions of mica, quartz, and feldspar, and has irregularly shaped calcite grains ranging from 100 to 600 micrometers in diameter.
• ' The high ledge we supposed to be porphyry, containing crystals of iron pyrites and compact feldspar.
• Bytownite is a calcium rich member of the plagioclase solid solution series of feldspar minerals with composition between anorthite and labradorite.
• Sunstone, a rare feldspar exhibiting in certain directions a brilliant spangled appearance, which has led to its use as a gemstone.
• Anorthite (an = not, ortho = straight) is the calcium endmember of the plagioclase feldspar mineral series.
• – An ultramafic, ultrapotassic intrusive rock dominated by mafic phenocrysts in a feldspar groundmass.
• Mineral content is usually abundant feldspathoids (leucite or nepheline), plagioclase, and lesser alkali feldspar.
• Feldspar is present as plagioclase (typically oligoclase or andesine) with alkali feldspar making up less than 10% of the total feldspar content.
• They consist essentially of very small crystals of minerals such as plagioclase feldspar, with hornblende or augite, and may contain also biotite, quartz, and orthoclase.
• The minerals within the rock include quartz, plagioclase feldspar, microcline, and muscovite, with smaller amounts of biotite and tourmaline.
• Nepheline syenite is a holocrystalline plutonic rock that consists largely of nepheline and alkali feldspar.

Förberedelsen av sidan tog: 328,98 ms.