6.5=61/2
6.5=61/2
9.0 Mohs Hardness scale
The Mohs mineral hardness scale is an ordinal scale.
The answer depends on what aspect of the scale you wish to measure: its hardness, reflectivity, mass, density, surface area, thickness, etc.
Emeralds are compound of Boron, Aluminum and silicate. They are far less tougher than diamonds. Measured on mosh scale of hardness for minerals emeralds value is less than 8.0. On the same scale hardness of diamonds is 10.00
The Mohs Scale of Hardness measures how well a substance resists scratching by another material.
The hardness of the mineral pyrite, or Fool's Gold, is about 6 on the Mohs hardness scale. That's a little harder than a steel knife blade, but not as hard as the mineral quartz
Orthoclase feldspar is 6 on the Mohs scale of mineral hardness.
Hardness, luster, and scratch color help narrow down the possibilities . . . specific gravity and chemical analyses follow. As an example, gold and pyrite look about the same - both have a somewhat shiny luster. The streak color, though is black for pyrite and yellowish for gold. Hardness of pyrite is 6-something on the hardness scale, and gold is around 2.5, which is much softer.
on number scale 2
The Mohs Scale of Hardness determines the hardness of minerals by scratching them with commonly found objects. The minerals are assigned a number which corresponds to their hardness; higher numbers indicate higher hardness.
Granite is not assigned a number on the Mohs scale of hardness. The Mohs scale is a measurement of the relative hardness of minerals. Because granite is a rock composed of a variety of minerals, only the individual minerals which compose it have a Mohs hardness.
The Mohs Hardness Scale is numbered form one to ten, one being the softest minerals (talc) and ten being the hardest (diamond).
A ruby is a mineral corundum. The Mohs hardness scale lists the following from softer to harder: Talc - 1 Gypsum - 2 Calcite - 3 Fluorite - 4 Apatite - 5 Feldspar - 6 Quartz - 7 Topaz - 8 Corundum (which includes the ruby) - 9 Diamond - 10 Ruby has a Mohs hardness of 9.
The minerals that comprise the various iron ores have varied Mohs' hardness. Hematite: 5.5-6.5 Magnetite: 5.5-6.5 Limonite: 4-5.5 Pyrite: 6-6.5
Diamond, with a hardness of 10 on the Mohs scale.
Slate, being a metamorphic rock, would not have a hardness listing on the Mohs scale of mineral hardness.
what would you use the mohns scale of hardness for