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Phyllite has a density of between 2.18 and 3.3, dry.
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Which is harder basalt or granite?
Both basalt and granite are types of rock, and a rock is composed of multiple minerals - except for some rocks composed of essentially one mineral like limestone (calcite) or quartzite (quartz). Minerals are crystalline compounds with known characteristics such as hardness, specific gravity, etc Therefore the hardness of the rock depends on the exact location on the rock you are testing the hardness, as it will vary from mineral to mineral. Some minerals even have differential hardness. Granite is composed of quartz, feldspar, and usually some ferromagnesian minerals such as biotite or hornblende (depending on the definition of a granite). Basalt is composed mostly of plagioclase (a feldspar) and pyroxene. Each of those minerals has a different hardness, and geologists never use the hardness of a "rock" to determine what kind of rock it is. Basalt is usually much finer grained than granite so it would be virtually impossible to determine the hardness of the individual mineral crystals. On Moh's hardness scale, the hardness of these rock-forming minerals are as follows: Quartz 7 Feldspar 6 (depending on the species of feldspar) Biotite 2.5-3 Pyroxene 5-6 (depending on the species of pyroxene) So the hardness of a rock is determined by the minerals, and in a coarse grained rock like a granite, the hardness can vary widely. The hardest mineral in granite (quartz) is harder than the hardest mineral in basalt (feldspar), but that's not enough to say that granite is conclusively harder than basalt. The resistance to breaking of a rock (which could be confused with the apparent hardness to a non-expert) is greatly affected by fractures, weathering, induration, welding, and many other features which are independent of mineral content.
A coarse grained igneous rock with no pyroxene?
Granite is a coarse grained igneous rock without Pyroxene.
How do you distinguish between olivine and pyroxene under microscope?
Look at the cleavage, pyroxene has 2 cleavages at 90, olivine generally has none, just lots of fractures
Which mineral will scratch fluorite galena and pyroxene?
Olivine
Which minerals are found in basalt and gabbro?
olivine and pyroxene
Is pyroxene a mineral or rock?
Pyroxene is a group of minerals.
Is pyroxene good for arthritis?
No. Pyroxene is a crystalline silicate mineral.
Which mineral pyroxene or orthoclase crystallizes from magma first?
pyroxene
Which is harder basalt or granite?
Both basalt and granite are types of rock, and a rock is composed of multiple minerals - except for some rocks composed of essentially one mineral like limestone (calcite) or quartzite (quartz). Minerals are crystalline compounds with known characteristics such as hardness, specific gravity, etc Therefore the hardness of the rock depends on the exact location on the rock you are testing the hardness, as it will vary from mineral to mineral. Some minerals even have differential hardness. Granite is composed of quartz, feldspar, and usually some ferromagnesian minerals such as biotite or hornblende (depending on the definition of a granite). Basalt is composed mostly of plagioclase (a feldspar) and pyroxene. Each of those minerals has a different hardness, and geologists never use the hardness of a "rock" to determine what kind of rock it is. Basalt is usually much finer grained than granite so it would be virtually impossible to determine the hardness of the individual mineral crystals. On Moh's hardness scale, the hardness of these rock-forming minerals are as follows: Quartz 7 Feldspar 6 (depending on the species of feldspar) Biotite 2.5-3 Pyroxene 5-6 (depending on the species of pyroxene) So the hardness of a rock is determined by the minerals, and in a coarse grained rock like a granite, the hardness can vary widely. The hardest mineral in granite (quartz) is harder than the hardest mineral in basalt (feldspar), but that's not enough to say that granite is conclusively harder than basalt. The resistance to breaking of a rock (which could be confused with the apparent hardness to a non-expert) is greatly affected by fractures, weathering, induration, welding, and many other features which are independent of mineral content.
What type of rock is made of only pyroxene and olivine?
Peridotite is made only of olivine and pyroxene
Is pyroxene a mineral?
A pyroxene is any of a group of crystalline silicate mineral common in igneous and metamorphic rocks.
Can pyroxene ever be a sedimentary rock?
no, Pyroxene is a Mineral not a rock. Rocks are made up of 2 or more minerals
Name a coarse grained igneous rock with no pyroxene?
Granite is a coarse grained igneous rock without Pyroxene.
What is the composition of the Earth lower mantle?
•Thet Low•The Lower Mantle is made of Olivine, Pyroxene, and Feldspar.v •The Lower Mantle is made of Olivine, Pyroxene, and Feldspar.er Mantle is made of Olivine, Pyroxene, and Feldspar.
A coarse grained igneous rock with no pyroxene?
Granite is a coarse grained igneous rock without Pyroxene.
Is pyroxene magnetic?
Yes, but not strongly.
Does pyroxene mineral have cleavage or fracture?
Yes.
