0
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.
What else can I help you with?
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
Which minerals can be found in all samples of rhyolite and andesite?
Both rhyolite and andesite typically contain the minerals quartz, feldspar (particularly plagioclase and alkali feldspar), and biotite. They may also contain other minerals such as hornblende or pyroxene, though these are more variable. The presence of these minerals contributes to their characteristic compositions and textures. Rhyolite is generally more silica-rich than andesite, resulting in differences in mineral proportions.
Which is harder a rock or a mineral?
Minerals are naturally occurring substances with a specific chemical composition and crystal structure, while rocks are made up of one or more minerals. Therefore, determining which is harder depends on the specific rock and mineral being compared. In general, minerals tend to be harder than rocks due to their strong crystal structure.
Are there minerals on venus?
Yes, there are minerals on Venus. The surface of Venus is composed of rocks made of minerals such as basalt and volcanic materials like lava flows. However, the extreme temperature and pressure conditions on Venus make it difficult to study the mineral composition in detail.
Is feldspar metamorphic igneous or sedimentary?
Feldspar is primarily an igneous rock-forming mineral, commonly found in intrusive and extrusive igneous rocks such as granite and basalt. However, feldspar can also be present in some metamorphic rocks as a result of the recrystallization of pre-existing feldspar minerals during metamorphic processes.
What mineral accounts for 35 percent of the Earth's composition?
Iron is the mineral that accounts for approximately 35% of the Earth's composition. It is a crucial element in the Earth's core and mantle, as well as in the composition of rocks and minerals throughout the planet.
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 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%).
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 a triclinic crystal a mineral?
Triclinic is a crystal system that describes the geometric arrangement of atoms in a mineral. Minerals can belong to different crystal systems, such as triclinic, depending on their internal structure and external crystal shape. So, a mineral can have a triclinic crystal structure, but triclinic itself is not a mineral.
Is sugar crystal a mineral?
No, sugar crystals are not considered minerals. Minerals are naturally occurring inorganic substances with a defined chemical composition and crystalline structure, while sugar crystals are organic compounds made up of carbon, hydrogen, and oxygen atoms.
What kind of nutrient are ironcalcium and phosphorus?
Iron is a mineral, calcium and phosphorus are generally considered salts (though salts are also minerals).
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!
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.
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.
Why is mercury not considered a mineral?
A mineral is a naturally occurring, inanimate object with a highly specific chemical composition. Coral is the fossilized remnants of a living aquatic creature and thus does not qualify.Coral is also not considered a mineral since it is organic. All real minerals are inorganic.ANS: 3By definition #1: coral is not a mineral because it is not homogeneous, it does not have a definite chemical composition nor is it crystalline.Dead carbonate coral skeletons can meet definition #3 for being a mineral since they are composed of inorganic matter. The skeletons are composed predominately of calcium carbonate. Not all carbon compounds are organic. Carbonates are one class of chemicals that are considered inorganic even though they contain carbon. Carbon dioxide gas is also considered to be inorganic.This is one of those questions that does not have a right or wrong answer. It depends on how you argue the point.===Good definition for "mineral" from http://www.thefreedictionary.com/mineral===1. A naturally occurring, homogeneous inorganic solid substance having a definite chemical composition and characteristic crystalline structure, color, and hardness.2. Any of various natural substances, as:a. An element, such as gold or silver.b. An organic derivative, such as coal or petroleum.c. A substance, such as stone, sand, salt, or coal, that is extracted or obtained from the ground or water and used in economic activities.3. A substance that is neither animal nor vegetable; inorganic matter.4. An inorganic element, such as calcium, iron, potassium, sodium, or zinc, that is essential to the nutrition of humans, animals, and plants.5. An ore.
