News

  • 0
  • 0

Global quartz powder market trend 2022-2028 What is The Mohs Hardness Scale? by Newsforminerpro

The European Union is seeking to boost energy cooperation with African countries to help wean them off dependence on Russian gas imports.

Bloomberg said, recently, according to a draft EU file, African countries, especially in western Africa Nigeria, Senegal and Angola have a large untapped liquefied natural gas (LNG), the European Commission will adopt this file about enhanced external energy supply later this month, as part of plans to reduce dependence on Russian energy.  

Because of the ever-changing international situation, the supply and prices of international bulk quartz powder are still very uncertain.

What is The Mohs Hardness Scale?
The Mohs Hardness Scale is a standard that indicates the hardness of minerals. It was first proposed by German mineralogist Frederich Mohs in 1822. It is widely used in mineralogy or gemology.
Mohs hardness is a method of scratching the surface of the tested mineral with a pyramidal diamond needle and measuring the depth of the scratch. the depth of the scratch is the Mohs Hardness Scale, represented by the symbol HM. It is also used to indicate the hardness of other materials.
 
Hardness is expressed by measuring the depth of scratches on a scale of 10 (scratching method):

 

Mineral Chemical formula Mohs hardness
Diamond C 10
Corundum Al2O3 9
Topaz Al2SiO4(OH,F)2 8
Quartz SiO2 7
Orthoclase feldspar KAlSi3O8 6
Apatite Ca5(PO4)3(OH,Cl,F) 5
Fluorite CaF2 4
Calcite CaCO3 3
Gypsum CaSO4·2H2O 2
Talc Mg3Si4O10(OH)2 1

 
 
The hardness of the tested mineral is determined by comparing it with the standard mineral in the Mohs hardness tester. For example, if a mineral can scratch calcite (3) but not fluorite (4), its Mohs hardness is 3-4.
 
In the process of determination, it is necessary to make sure that the scratch is actually a scratch, not just a "chalk" mark that will be erased. If the species being tested are fine-grained, fragile or powdery, the test may only loosen the particles without testing the surface of a single mineral; therefore, certain textures or aggregate forms may hinder or hinder true hardness determination.
 
Mohs hardness value is not absolute hardness value, but relative hardness value, relatively rough. But it is convenient and practical and suitable for field work.
 

Hardness Substance or mineral
0.2–0.3 caesium, rubidium
0.5–0.6 lithium, sodium, potassium, candle wax
1 talc
1.5 gallium, strontium, indium, tin, barium, thallium, lead, graphite, ice
2 hexagonal boron nitride, calcium, selenium, cadmium, sulfur, tellurium, bismuth, gypsum
2–2.5 halite (rock salt), fingernail, mica
2.5–3 gold, silver, aluminium, zinc, cryolite, lanthanum, cerium, jet
3 calcite, copper, arsenic, antimony, thorium, dentin, chalk
3.5 platinum
4 fluorite, iron, nickel
4–4.5 ordinary steel
5 apatite (tooth enamel), zirconium, palladium, obsidian (volcanic glass)
5.5 beryllium, molybdenum, hafnium, glass, cobalt
6 orthoclase, titanium, manganese, germanium, niobium, uranium, rhodium
6–7 fused quartz, iron pyrite, silicon, ruthenium, iridium, tantalum, opal, peridot, tanzanite, rhodium, jade, garnet, pyrite
7 osmium, quartz, rhenium, vanadium
7.5–8 emerald, beryl, zircon, tungsten, spinel
8 topaz, cubic zirconia, hardened steel, spinel
8.5 chrysoberyl, chromium, silicon nitridetantalum carbide
9 corundum (includes sapphire and ruby), tungsten carbidetitanium nitridealuminium oxide
9–9.5 silicon carbide (carborundum), zirconium carbide, alumina, beryllium carbide, titanium carbide, aluminum boride, boron carbide
9.5–near 10 boron, boron nitride, rhenium diboride (a-axis), stishovite, titanium diboride, moissanite (crystal form of silicon carbide)
10 diamond, carbonado

 
 
What is a 10 on the Mohs Hardness Scale?
On the Mohs hardness scale, a diamond has a hardness of 10, meaning it is the hardest mineral known to man.
 
What is a 5 on the Mohs Hardness Scale?
Apatite (enamel), zirconium, palladium, obsidian (volcanic glass).
 
Is 7 on the Mohs scale hard?
Minerals with Mohs hardness of 7 include osmium, quartz, rhenium, vanadium and so on. They are harder than substances with Mohs hardness less than 7 (such as apatite, calcite, gypsum, etc.) and softer than those with Mohs hardness greater than 7.
 
Hardness Test
The hardness test developed by Friedrich Mohs is the first known test to evaluate the scratch resistance of materials. This is a very simple but imprecise comparison test. Perhaps its simplicity makes it the most widely used hardness test.
Since the invention of the Mohs hardness tester in 1812, many different hardness testing methods have been invented. These tests include Brinell, Knoop, Rockwell, Shore and Vickers Test. Each test uses a tiny "indenter", which is applied to the material being tested and its force is carefully measured. The hardness value is then calculated by the size of the indentation or the depth and force.
 
Chemical Supplier
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials including silicon powder, nitride powder, graphite powder, zinc sulfide, calcium nitride, 3D printing powder, etc.
If you are looking for high-quality chemicals and nanomaterials, please feel free to contact us and send an inquiry. (sales3@nanotrun.com)

 

Researchers at the University of Warwick in the UK have developed a lithium battery technology innovation. Adding graphene beams doubles battery life. By strengthening the structure of the anode with graphene beams, they have found an effective way to replace the graphite in the anode with silicon. Thereby increasing the capacity of the lithium-ion battery and more than doubling the lifespan.
As a supplier of anode materials for lithium batteries, we also provide quartz powder. We will continue to provide quartz powder for the global market, please feel free to contact us.


.

Inquery us

NEXT NEWS

Our Latest News

Global quartz powder market trend 2022-2028 What is The Mohs Hardness Scale? by Newsforminerpro

The European Union is seeking to boost energy cooperation with African countries to help wean them off dependence on Russian gas imports.Bloomberg said, recently, according to a draft EU file, African countries, especially in western Africa Nigeria,…

Global vanadium nitride powder market trend 2023-2030 What is Vanadium Nitride VN? by Newsforminerpro

The U.S. and its allies plan to impose sanctions on more Russian industries and supply chains.The US government representatives recently visited Europe to consult with allies on strengthening and enforcing sanctions to punish Russia. They also plan t…

Global Titanium Carbide TiC Powder,Overview of Titanium Carbide TiC Powder,Application of Titanium Carbide TiC Powder,Titanium carbide TiC powder price,Titanium Carbide TiC Powder Supplier market trend 2025-2026 Preparation method of titanium carbide TiC

The chemical formula of titanium carbide, TiC, is a gray powder that is often used in the manufacture of cemented carbide and is also used as an abrasive for electrodes and arc lamps.…