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On the Mohs Scale of hardness, the hardness comparisons are exactly opposite. Talc is rated as 1 -- soft, and diamond is rated as 10 -- hard, in fact, the hardest rating.
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What is the scale called to measure hardness of gemstones?
The Mohs scale. # Talc # Gypsum # Calcite # Fluorite # Apatite # Feldspar # Quartz # Topaz # Corundum # Diamond The Mohs scale, however, is an purely ordinal scale. For example, corundum (9) is twice as hard as topaz (8), but diamond (10) is almost four times as hard as corundum. Check the related link for more info.
Can talc scratch glass?
No. Talc is the softest mineral. It can't scratch anything that is harder that itself. Talc is number 1 on the Mohs scale, a scale of hardness, but diamond is number 10, which means that diamond is very much the harder of the two. You can't even scratch a diamond with a fingernail, hardness of about 2.5, so talc with even less hardness doesn't stand a chance against the mighty diamond! See Related Links below this box for more information about the hardness of talc, diamonds and other materials.
What is the 2 second hardest gem stone?
Hardness is the resistance of a gem to scratching and abrasion. It is one of the key qualities of a gemstone. Diamond is the hardest gemstone. The second hardest gemstone is corundum (ruby and sapphire).
Moh's scale identifies minerals by their relative?
The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. Ithardnesses
What is the chemical composition talc?
chicken
Can you give examples of minerals from softest to hardest?
Talc - softest Gypsum Calcite Fluorite Apatite Orthoclase feldspar Quartz Topaz Corundum Diamond -hardest
What is mohs scale of hardest and equivalent easy test?
from 1 to 10, talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, diamond. e.g hardness 6 will scratch or abrade apatite but will be scratched or abraded by quartz
What is the softest rock to hardest rock?
the softest rock is talc and the hardest is a diamond
Which is the hardest mineral among corundum quartz and topaz?
Using the geological Moh's scale of hardness of minerals: 1 - Talc 2 - Gypsum 3 - Calcite 4 - Fluorite 5 - Apatite 6 - Feldspar 7 - Quartz 8 - Topaz 9 - Corundum 10 - Diamond
Is talc softer than topaz?
Talc is the softest mineral.. here is the mohs scale of hardness 1. talc 2. gypsum 3.calcite 4.fluorite 5.apatite 6.orthoclase 7. quartz 8. topaz 9. corundum 10.diamond
Except diamond what is the second hardest thing in the world?
acctually the hardest thing is nanocrystalline diamond but after diamond it is boron and titanium dioxide. if you are refering to what is just lower than diamond on mohs hardness scale 10 diamond 9 corundum 8 topaz 7 quartz,6 feldspar 5 apatite 4 fluorie 3 calcite 2 gypsum and1 talc
How many degrees of hardness are defined on the Mohs hardness scale?
There are ten degrees of mineral hardness, the softest (1) being talc and the hardest (10) being diamond. 1: talc 2: gypsum 3: calcite 4: fluorite 5: apatite 6: orthoclase feldspar 7: quartz 8: topaz 9: corundum 10: diamond
What is feldpars hardness?
Orthoclase comes in as 6 on Mohs scale of mineral hardness:- Talc, Gypsum, Calcite, Fluorite, Apatite, Orthoclase, Quartz, Topaz, Corundum, Diamond;
What are the ten minerals of themohs scale?
The basic Moh's hardness scale consists of: 1. Talc (softest) 2. Gypsum 3. Calcite 4. Fluorite 5. Apatite 6. Feldspar 7. Quartz 8. Topaz 9. Corundum 10. Diamond (hardest)
What is hardest mineral and what is the softest?
The hardest mineral is diamond, and the softest mineral is talc.
What are the softest and hardest minerals on Moh's Hardness Scale?
The scale goes from 1 to 10 Talc (talcum powder) is the softest Diamond is the hardest examples of each point on the scale are: 1. Talc (Mg3Si4O10(OH)2) 2. Gypsum (CaSO4·2H2O) 3. Calcite (CaCO3) 4. Fluorite (CaF2) 5. Apatite (Ca5(PO4)3(OH-,Cl-,F-)) 6. Orthoclase Feldspar (KAlSi3O8) 7. Quartz (SiO2) 8. Topaz (Al2SiO4(OH-,F-)2) 9. Corundum (Al2O3) 10. Diamond (C)
What is a ranking of minerals from sofest to hardest?
Well the mohs hardness scale, goes upwarda by 1 everytime and diamond (10) being the hardest is Talc Gypsum Calcite Flurite Appatite Fieldspat Quartz Topaz Corundum Diamond
