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The scale of mineral hardness is referred to as the Mohs scale. They run from 1 which is Talc to 10, which is diamond. The other units are 2: Gypsum, 3: Calcite, 4: Fluorite, 5: Apatite, 6: Feldspar, 7: Quartz, 8: Topaz, and 9: Corundum.
Wiki User
∙ 9y ago
Wiki User
∙ 11y agoThere is no simple answer or single unit of hardness, but there are many different scales and systems used to measure different kinds of hardness. The most familiar to most people would be the Mohs' scale. It is used to measure the hardness of stone on a non-linear scale from 1 to ten. Talc, the softest, is 1 and the hardest, diamond, is 10. It isn't linear because diamond is actually 42 times harder than talc, not 10 times.
Wiki User
∙ 9y agoDegree of hardness refers to the Moh's scale of mineral hardness. It talks about the scratch resistance of each mineral on the scale.
Wiki User
∙ 12y ago- dGH or degree of general hardness
- dKH or German degrees of hardness
- mg/L of calcium carbonate or hydrocarbonate
Wiki User
∙ 9y agoAmong some others, there are: mmol/L, ppm, mg/L, dGH, °dH, °fH, gpg, °e, °Clark
All of them measure the amount of Ca and other bivalent ions like Mg, Zn, Mn.
Wiki User
∙ 11y agoppm
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What is a sentence with the word hardness?
no one likes your Hardness! hardness is not a good character.
What is the hardness of Limonite on the mohs hardness scale?
The hardness of Limonite is 4 t0 5.5 on the mohs hardness scale.
Why do rocks have different hardness?
it has to do with the hardness of the mineral which can be found by moh's scale of hardness
Is hardness property of elements?
Pure materials, especially minerals, are measured on a hardness scale. There are three basic tests: indentation hardness, scratch hardness and rebound hardness. See Wikipedia
What is the hardness of the December birthstone?
The hardness of Turqoise is a 5-6 on the Mohs hardness scale.
What determine the hardness of a fat?
The hardness of fat at a given temperature is determined mainly by its overall fatty acid. It is also determined by how long the carbon chain is, and also the degree of saturation.
Is play doh a liquid?
It's both a liquid with very high viscosity and a solid with very low degree of 'hardness'.
Is Play-Doh a solid or liquid?
It's both a liquid with very high viscosity and a solid with very low degree of 'hardness'.
What is difference between barcol hardness and Shore A hardness?
what is the difference between Shore-A Hardness & Barcol Hardness
What is a sentence with the word hardness?
no one likes your Hardness! hardness is not a good character.
What is the hardness of a conundrum?
The hardness of conundrum is 9 on the Moh's hardness scale
What is the hardness of Limonite on the mohs hardness scale?
The hardness of Limonite is 4 t0 5.5 on the mohs hardness scale.
How hard is silver on the Mohs scale?
I don't found the Mohs hardness of plutonium but: - the Brinell hardness is 242 at r.m. - the Vickers hardness is 255 at r.m. After a hardness conversion chart an equivalent Mohs hardness may be 3,7.
What do the h's in 4 h stand for?
If you are asking about pencils, it represents a degree of hardness of the 'lead' as in H for hard, then 2H 3H 4H and up to 9H
What is the hardness of manganese?
Mohs hardness: 6 Brinell hardness: 196 MPa.
Why do rocks have different hardness?
it has to do with the hardness of the mineral which can be found by moh's scale of hardness
What is salts hardness on the hardness scale?
The Mohs hardness of sodium chloride is 2,5.
