calcium
there are many names for this explanation and a particular name is..............
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
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),
The commonly used hardness scale is the Mohs scale. It measures the hardness of minerals based on their ability to scratch one another, ranking them from 1 (talc) to 10 (diamond). This scale is particularly useful in geology and mineralogy for identifying minerals based on their hardness.
chicken
diamonds
Quartz, copper, fluorite, and talc are all minerals. There are over 4,900 known mineral species. Mineral species are controlled by the Earth's chemistry.
tabe salt, talc, and a sapphire if there are any others tell me
There are no other minerals that are softer than talc. On Moh's hardness scale, diamonds are the hardest mineral, and talc is the softest mineral in the world.
Talc - softest Gypsum Calcite Fluorite Apatite Orthoclase feldspar Quartz Topaz Corundum Diamond -hardest
Talc is the softest mineral on the Mohs scale with a hardness of 1, so it can be easily scratched by harder minerals. Talc can scratch over minerals with a lower hardness value, but it cannot scratch minerals that are harder than itself, such as quartz or diamond.
talc
Talc, other minerals
Talc
All of them
Talc is a rare form of crystal. Talc is formed from serpentine, amphibole, and olivine. The metamorphism of these minerals with water and carbon dioxide form the rare talc crystal.
Talc and gypsum are two minerals that can be scratched with a fingernail due to their low hardness on the Mohs scale.