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Is apatite can scratch calcite true or false and because?
True, apatite can scratch calcite. This is because apatite has a higher hardness on the Mohs scale, rated at 5, while calcite is rated at 3. The hardness scale measures a mineral's ability to scratch another, so a mineral with a higher rating can scratch one with a lower rating.
What color of streak is marble?
Marble, being composed almost entirely of the mineral calcite, would have a white streak. The same colour as calcite's streak.
What are the 7 properties mineralogist use to identify ninerals?
Colour - however, this can be a very misleading property. Transparency - Is the crystal transparent, translucent or opaque Lustre - how shiney is the crystal is, there are various different types of lustre. Hardness - Expressed in a number between 0 and 10 on the Moh scale. Streak - the colour of the mineral in powdered form. Easily testable by scratching the mineral on a porcelain plate. Cleavage - Very characteristic to a mineral is what the preferred cleavage is. Mode of occurrence - Is it like needles, fibre, tabular, prismatic, etc.
What is the difference between a scratch test and a streak test?
a streak test is a test wheree you rub a mineral across a streak plate to see the color of its streak, which is a better indentifying factor of the mineral than the external color. A scratch test is when you scratch a mineral to find out its hardness on the Mohs Scale of Hardness. This is also another useful identifying factor
How is the value of a crystaline rock determined?
By levels of hardness, wear, scarcity, clarity and color, and association with other minerals. Also the habit of the mineral.
What mineral is harder than gypsum but softer than flourite?
Calcite is a mineral that is harder than gypsum but softer than fluorite on the Mohs scale of mineral hardness. Calcite has a hardness of 3, while gypsum has a hardness of 2 and fluorite has a hardness of 4.
If Calcite will scratch gypsum This is an example of what physical characteristics?
This is an example of hardness, which is a physical characteristic that describes the resistance of a mineral to being scratched. Hardness is determined by the ability of one mineral to scratch another.
What will scratch calcite?
Using the Mohs Mineral Hardness scale, calcite has a hardness of 3. Hence anything with a hardness of 3 or above can scratch calcite (i.e...quartz and fluorite).
Is fluorite harder than calcite?
Yes, fluorite is harder than calcite. Fluorite has a hardness of 4 on the Mohs scale, while calcite has a hardness of 3. This means that fluorite can scratch calcite, but calcite cannot scratch fluorite.
Which object can scratch calcite but not apatite?
On the Mohs mineral hardness scale, calcite is about a 3, and apatite is about a 5. So, whatever is at a hardness of 4 will scratch a 3 but not a 5. That mineral is fluorite.
What mineral has a hardness of 2.5-3?
Calcite is a mineral that is white or colorless and has a hardness of 2.5 and splits with cubic cleavage.
If a mineral scratches calcite but is scratched by apatite what is the minerals hardness?
Somewhere between 3 and 5 on the Mohs scale of relative mineral hardness...
What is the mineral hardness of marble?
Marble isn't a mineral, but it is made out of around 100% calcite, which is typically 2.5 - 3 on Moh's hardness scale.
What mineral is harder than calcite but wont scratch glass?
Fluorite is a mineral that is harder than calcite but won't scratch glass. Calcite has a hardness of 3 on the Mohs scale, while fluorite has a hardness of 4. However, glass typically has a hardness of about 5.5, making it too hard for fluorite to scratch.
Which mineral can be scratched by glass but not a penny?
The mineral that can be scratched by glass but not a penny is calcite. Calcite has a hardness of 3 on the Mohs scale, which is lower than the hardness of glass (5.5) but higher than that of a penny (2.5).
Can appetite scratch calcite?
No, appetite (also known as apatite) is not hard enough to scratch calcite. Calcite is a mineral that is harder than appetite on the Mohs scale of mineral hardness.
Is calcite a soft mineral?
Calcite is a non silicate mineral because it does not contain silicon.
