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Why are feldspar considered to be mineral even though their composition?
Wiki User
∙ 13y ago
The plagioclase feldspar ranges from sodium-rich albite at low temperatures to calcium-rich anorthite at high temperatures. The difference in the mineral's appearance is due to a slight change in the chemical composition and a difference in growth pattern as the temperature changes. At intermediate temperatures, both calcium and sodium are incorporated in the crystal structure, building up alternating layers that allow light to refract or scatter, producing a range of colors.
Wiki User
∙ 13y ago
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Is agate a silicate or non silicate mineral?
It's composition can be Fe3 O4, or FeFe2 O4, depending if it's ferric or ferrous. There is no silicon in its composition, so it's a nonsilicate, mafic mineralalso a diamond is the allotrope carbon of where the carbon atoms are arranged in the specific type of cubic lattice called diamond cubic. Diamond is an optically isotropic crystal that is transparent to opaque. I might be wrong though!
How is water classified as a mineral?
Water cannot be classified as a mineral, ice can as long as its naturally occurring though so in some cases ice can but water may never because it is a liquid. And liquids can't be minerals because its not a solid. For mineral to be one is must be natural occurring, inorganic, solid, crystal structure, and definite chemical composition
Are there minerals on venus?
iron and hytrogen and nitrogen even though they are not minerals they are gasses
Which is harder a rock or a mineral?
That depends on WHAT rock or mineral we're talking about. Often, rocks are harder, though.
What minerals are commonly present in granite?
Quartz, Feldspar (or Felspar) and Mica. Other minerals may be present but all of the above three must be therefor a Granite.
Is feldspar metamorphic igneous or sedimentary?
Feldspar is a mineral. It can be found it sedimentary and metamorphic rocks though.
What mineral accounts for 35 percent of the Earth's composition?
No *mineral* accounts for that much of Earth's composition, though the *element* iron makes up 32-35% of the mass of Earth
Is a triclinic crystal a mineral?
Yes. Triclinic crystals are usually flat with sharp edges though they don't have right angles. ex. feldspar
What was feldspar used for?
Feldspars are a common non-metallic alumino-silicate mineral that have a hardness of 6 on Mohs scale and produce white streaks.There are broadly three main types: potassium, sodium and calcium rich feldspars. They have the following general chemical formulas:KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8The endmember mineral states are known as K-Feldspar, Albite and Anorthite which are the potassium, sodium and calcium feldspars respectively.Perhaps you mean feldspar?Feldspar is the most common rock mineral in the Earth's crust (about 60%).
What accounts for 35 percent of the earth's composition?
No *mineral* accounts for that much of Earth's composition, though the *element* iron makes up 32-35% of the mass of Earth
What is the different between a rock and mineral?
A rock is composed of combinations of minerals, each mineral having its own chemical formula and crystalline structure. Minerals are composed of an element or combination of elements. Granite, for instance, is an intrusive igneous rock composed ofthe minerals quartz, feldspar, mica, hornblende, and other combinations or ratios of minerals.A mineral is a naturally-occurring inorganic (there are some exceptions to this) crystalline solid (though mercury is regarded as a mineral) with a specific chemical composition and a characteristic internal regular geometric arrangement of atoms, sometimes expressed as natural crystal faces.A rock is an aggregate of one (such as quartzite) or more (such as granite) mineral particles formed through either crystallization of molten magma (igneous rocks), settling of particles (sedimentary rocks), or reheating and pressure applied to pre-existing rocks (metamorphic rocks), with no set chemical composition or atomic structure.
Is coal a mieral?
Coal is not a mineral. It is loosely considered to be a rock, even though it is made of organic material.
Is agate a silicate or non silicate mineral?
It's composition can be Fe3 O4, or FeFe2 O4, depending if it's ferric or ferrous. There is no silicon in its composition, so it's a nonsilicate, mafic mineralalso a diamond is the allotrope carbon of where the carbon atoms are arranged in the specific type of cubic lattice called diamond cubic. Diamond is an optically isotropic crystal that is transparent to opaque. I might be wrong though!
On what does the density of a mineral depend?
The molecular weight and percentage composition of the component atoms (Gold weighs more than copper even though they are chemically similar) and the packing structure (how much wasted space is there in the crystal?)
What is the most important difference between a rock and a mineral?
A rock is composed of combinations of minerals, each mineral having its own chemical formula and crystalline structure. Minerals are composed of an element or combination of elements. Granite, for instance, is an intrusive igneous rock composed of the minerals quartz, feldspar, mica, hornblende, and other combinations or ratios of minerals.A mineral is a naturally-occurring inorganic (there are some exceptions to this) crystalline solid (though mercury is regarded as a mineral) with a specific chemical composition and a characteristic internal regular geometric arrangement of atoms, sometimes expressed as natural crystal faces.A rock is an aggregate of one (such as quartzite) or more (such as granite) mineral particles formed through either crystallization of molten magma (igneous rocks), settling of particles (sedimentary rocks), or reheating and pressure applied to pre-existing rocks (metamorphic rocks), with no set chemical composition or atomic structure.
What kind of nutrient are ironcalcium and phosphorus?
Iron is a mineral, calcium and phosphorus are generally considered salts (though salts are also minerals).
How is water classified as a mineral?
Water cannot be classified as a mineral, ice can as long as its naturally occurring though so in some cases ice can but water may never because it is a liquid. And liquids can't be minerals because its not a solid. For mineral to be one is must be natural occurring, inorganic, solid, crystal structure, and definite chemical composition
