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No, they are examples of silicate minerals. However, quartz is the collective name for a bunch of SiO2-polymorphs, like tridymite, coesite, alpha-quartz and beta-quartz. Likewise, K-feldspar is the collective name for the KAlSi3O8-polymorphs microcline, orthoclase and sanidine. Polymorphs are chemically identical, but differ in the crystallographic structure. To confuse it, each polymorph mentioned above is also a mineral ...
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Are feldspar and quartz carbonates?
Feldspar and quartz are not carbonates (carbonate minerals). They are silicates because they have Silica (Si) in the formula. Quartz is SiO2. Feldspar is a mineral group (feldspars) They have a variable composition that gneerally depends on the amount of Ca, Na or K in their chemical formula. An example of feldspar is Albite NaAlSi3O8. Carbonates have CO3 in their chemical formula. Two examples are Calcite (CaCO3) and Siderite (FeCO3).
How hard is orthoclase feldspar?
On the Mohs Scale of mineral hardness, feldspar is 6 and quartz is 7, so quartz is harder. What does this mean? quartz will scratch feldspar, but feldspar will not scratch quartz.
What mineral can scratch feldspar but not quartz?
There is no mineral that would satisfy the question. If a mineral is able to scratch feldspar, it would have a Mohs hardness of 6 or above. Fluorite is rated as a 4. It would be impossible for a mineral which scratches feldspar to be unable to scratch fluorite.
Which object can scratch feldspar but not quartz?
steel file 6.5
What is another name for quartz?
feldspar
Are feldspar and quartz carbonates?
Feldspar and quartz are not carbonates (carbonate minerals). They are silicates because they have Silica (Si) in the formula. Quartz is SiO2. Feldspar is a mineral group (feldspars) They have a variable composition that gneerally depends on the amount of Ca, Na or K in their chemical formula. An example of feldspar is Albite NaAlSi3O8. Carbonates have CO3 in their chemical formula. Two examples are Calcite (CaCO3) and Siderite (FeCO3).
What minerals are common in both felsic and marfic igneous rocks?
Biotite and muscovite micas, quartz, magnetite, olivine, amphiboles, and feldspars.
Feldspar and quartz are examples of what minerals?
The group of minerals in Feldspar contain framework tectosilicates. The compositions of the major elements in the usual feldspars can be identified by three endmembers: Potassium-Feldspar, Albite, and Anorthite.
How hard is orthoclase feldspar?
On the Mohs Scale of mineral hardness, feldspar is 6 and quartz is 7, so quartz is harder. What does this mean? quartz will scratch feldspar, but feldspar will not scratch quartz.
What is formed when Quartz and Feldspar are mixed together in nature?
Quartz and feldspar are commonly found together in granite and gneiss.
Which object can scratch feldspar but not quartz?
steel file 6.5
What mineral can scratch feldspar but not quartz?
There is no mineral that would satisfy the question. If a mineral is able to scratch feldspar, it would have a Mohs hardness of 6 or above. Fluorite is rated as a 4. It would be impossible for a mineral which scratches feldspar to be unable to scratch fluorite.
What is another name for quartz?
feldspar
What are the properties of granite?
K-feldspar, Na-feldspar and Quartz Muscovite biotite.
Is feldspar granitic?
Yes, Granite is composed mainly of quartz and potassium feldspar
What is Obsidians' composition?
potassiun feldspar, quartz, plagioclase feldspar,biotite, and amphibole.
What is the mineral composition of arkose?
feldspar and quartz
