Orthoclase feldspar is 6 on the Mohs scale of mineral hardness.
Pumice has a hardness of about 6 on the Mohs scale of mineral hardness.
Orthoclase has a hardness of 6 on the Mohs scale of mineral hardness. It is a common mineral found in granite and other igneous rocks.
the hardness scale for the mineral hornblende is 5-6.
Augite has a hardness of around 5 to 6 on the Mohs scale of mineral hardness. It is a common mineral found in igneous rocks and is known for its dark green to black color.
Pumice has a hardness of about 5 to 6 on the Mohs scale.
A mineral with a hardness of 6 on the Mohs scale can be scratched by anything harder than a 6, such as minerals with a hardness of 7 or higher. It will not be scratched by minerals with a hardness of 5 or lower.
To distinguish between a mineral with a hardness of 6 and one with a hardness of 4, you can use the glass plate and the copper penny for comparison. First, scratch the mineral against the glass plate; if it scratches the glass, it has a hardness greater than 5. Then, use the copper penny to scratch the mineral; if the mineral scratches the penny, it has a hardness greater than 3. If it scratches the glass but not the penny, it has a hardness of 6; if it scratches the penny but not the glass, it has a hardness of 4.
Orthoclase feldspar is 6 on the Mohs scale of mineral hardness.
Galena
Orthoclase Feldspar.
The unknown mineral would have a hardness greater than 5.5 (the hardness of glass) but less than 7 (the hardness of quartz). Based on the Mohs Hardness Scale, the unknown mineral would likely have a hardness between 6 and 7.
The mineral with hardness 3 will get scratched.