Bone's rank may vary depending on how dense it is; often it averages between 4 and 6, but denser bones with more collagen may rank higher, while sparser bones, such as those in flying birds, may rank lower.
This fact is what makes a hypothetical "bone age" possible; if rocks are unavailable or too soft, the gifts of the dead may more than compensate.
bone ... the finger nail rank is 3
Tantalum is 6.5 on the Mohs scale,
It's called the Ore
Peridot is around 6.5 to 7 on the mohs scale.
how hard is diatomite on mohs scale
Quartz has the value of 7 on the Mohs scale.
No, just the hardness.
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.
the mohs hardness scale
Tantalum is 6.5 on the Mohs scale,
It's called the Ore
Nope. It is actually the hardness. I'v been trying to find out what the Luster scale is myself....:S
Topaz is number 8 on the Mohs scale.
Peridot is around 6.5 to 7 on the mohs scale.
how hard is diatomite on mohs scale
The hardness is 3-4 on Mohs scale.
The Mohs scale compares the hardness of an object or substance.
Quartz has the value of 7 on the Mohs scale.