Iron is not a mineral used in Moh's hardness scale.
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
The iron ore would be a rock composed of multiple minerals, each with their own hardness on the Mohs hardness scale. There are multiple ores of iron.
Depends on the ore- somewhere around a 6-8. Varies between hard and very hard. Also corrected spelling on the Mohs scale.
5.5 to 6.5
4-5
5-6
The Mohs scale is used to determine the relative hardness of minerals.
Mohs introduced the scale of mineral hardness - Mohs scale - named for him. Ten minerals whose hardness is known are ordered on a scale ranging from 1 (http://www.answers.com/topic/talc?initiator=WANSalc) to 10 (diamond),
Hardness, how easily it can be scratched
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
scratching the mineral acrros a glass plate
What is Mohs hardness of Barium Sulfate
It's called the Ore
the mohs hardness scale
how hard is diatomite on mohs scale
The hardness is 3-4 on Mohs scale.
The hardness of Limonite is 4 t0 5.5 on the mohs hardness scale.
The Mohs scale is used to determine the relative hardness of minerals.
It is about 2.5 in the Mohs Hardness Scale.
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.
Dolomite has a hardness of 3.5-4 on the Mohs scale of hardness.
flint is a type of quartz, so it has a hardness of about 7 on the mohs scale of hardness
Coal, as an organic sedimentary rock, is not determined to have a hardness on the Mohs scale of mineral hardness.