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No, kyanite is an indicator of high pressure metamorphism.
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Index minerals allow a scientist 2 understand the history of metamorphic rock?
Yes! since index minerals form at specific pressure and temperature conditions hence when they are encountered or observed in a certain metamorphic rock they serve to indicate the condition by which the rock formed.They can tell whether it is a high grade or low grade metamorphism.e.g Andalusite mineral indicate high grade metamorphism associated with high temperature.
What is the hardness and luster of tuff?
"Tuff", a rock made up of volcanic ash and other things, is not a mineral, so it has no hardness index or luster.
Suppose you have two mineral samples with the same hardness What other mineral properties could you use to decide whether the two samples are the same mineral?
color, refractive index, thermal conductivity, electrical conductivity, cleavage, density, fluorescence, radioactivity, reaction with acids or other chemicals, chemical composition, etc.
Is synthetic diamond a mineral?
A synthetic diamond is a mineral made of carbon, and possesses all the same properties as a mined diamond. It has a cubic crystalline structure, a refractive index of 2.42, dispersion of 0.044, mohs hardness of 10 and a density of 3.52.
Compare the mineral composition of diorite with the mineral composition of andesite?
Both andesite and diorite are igneous rocks with an intermediate color index. Diorite; however, is intrusive and phaneritic, whereas andesite is aphanitic and extrusive. Andesite is said to be the extrusive equivalent of diorite. Diorite is made up of plagioclase feldspar and ferromagnesian mineral crystals, mainly amphibole. Contrarily, andesite may resemble rhyolite, meaning it presents a need for microscopic examination to see its mineral crystals. The two have a composition of plagioclase feldspar and amphibole, but it is much more difficult to detect in andesite.
What are examples of index mineral?
kyanite and sillimanite
What metamorphic grade does the mineral sillimanite belong to?
Sillimanite is an index mineral for high temperature and variable pressure metamorphism.
What is index mineral?
An index mineral is used in geology to determine the degree of metamorphism a rock has experienced.
What is an index mineral?
An index mineral is used in geology to determine the degree of metamorphism a rock has experienced.
What are two examples of index minerals?
kyanite and sillimanite
Index minerals allow a scientist 2 understand the history of metamorphic rock?
Yes! since index minerals form at specific pressure and temperature conditions hence when they are encountered or observed in a certain metamorphic rock they serve to indicate the condition by which the rock formed.They can tell whether it is a high grade or low grade metamorphism.e.g Andalusite mineral indicate high grade metamorphism associated with high temperature.
When was Mineral Wells Index created?
Mineral Wells Index was created on 1900-05-05.
What is an example of an index mineral?
calcite
Is not an property of an index mineral?
forms only in a sedimentary rock
What is not a property of an index mineral?
forms only in a sedimentary rock
What is the difference between Grade point average and grade point index?
Grade Point Average (GPA) is the average of your grades using various point scales. Grade Point Index (GPI) is actually an eligibility index that is used for admissions. Elibility Index or GPI calculation: You can calculate your eligibility index by multiplying your grade point average by 800 and adding your combined score on the SAT, using the combined scores earned on the critical reading and math sections. If you took the ACT, multiply your grade point average by 200 and add ten times the ACT composite score. ACT Writing score is not considered in the composite score.
What mineral within a metamorphic rock that can be used to provide a narrow constraint on the temperature and pressure of formation of the rock is termed?
index mineral
