Talc and corundum can be distinguished primarily by their hardness and appearance. Talc is the softest mineral on the Mohs scale, with a hardness of 1, while corundum is much harder, rated at 9. Additionally, talc typically has a greasy feel and a pearly luster, whereas corundum has a more glassy appearance and can be found in various colors, including blue (sapphire) and red (ruby). Visual observation of these characteristics, along with a simple scratch test, can help differentiate the two.
Orthoclase comes in as 6 on Mohs scale of mineral hardness:- Talc, Gypsum, Calcite, Fluorite, Apatite, Orthoclase, Quartz, Topaz, Corundum, Diamond;
Talc is the softest kind of rock. It is most known for it's usage as a baby powder. It is important, when using talcum powder, to be sure the baby does not breathe it in, since it is bad for their lungs.
Corundum.
Corundum is in the trigonal crystal system.
Diamond is the hardest mineral and is the only one that can scratch corundum. but in my opinion corundum will scratch corundum any mineral of the same hardness will scratch the other !
Gypsum is soluble in water - Talc isn't
Talc - softest Gypsum Calcite Fluorite Apatite Orthoclase feldspar Quartz Topaz Corundum Diamond -hardest
Talc is the softest mineral.. here is the mohs scale of hardness 1. talc 2. gypsum 3.calcite 4.fluorite 5.apatite 6.orthoclase 7. quartz 8. topaz 9. corundum 10.diamond
Well the mohs hardness scale, goes upwarda by 1 everytime and diamond (10) being the hardest is Talc Gypsum Calcite Flurite Appatite Fieldspat Quartz Topaz Corundum Diamond
Orthoclase comes in as 6 on Mohs scale of mineral hardness:- Talc, Gypsum, Calcite, Fluorite, Apatite, Orthoclase, Quartz, Topaz, Corundum, Diamond;
Using the geological Moh's scale of hardness of minerals: 1 - Talc 2 - Gypsum 3 - Calcite 4 - Fluorite 5 - Apatite 6 - Feldspar 7 - Quartz 8 - Topaz 9 - Corundum 10 - Diamond
Talc is the softest kind of rock. It is most known for it's usage as a baby powder. It is important, when using talcum powder, to be sure the baby does not breathe it in, since it is bad for their lungs.
The basic Moh's hardness scale consists of: 1. Talc (softest) 2. Gypsum 3. Calcite 4. Fluorite 5. Apatite 6. Feldspar 7. Quartz 8. Topaz 9. Corundum 10. Diamond (hardest)
Talk about talc!
Corundum.
Talc is the softest mineral. The Mohs hardness scale goes like this, from softest to hardest: 1. Talc, 2. Gypsum, 3. Calcite, 4. Fluorite, 5. Apatite, 6. Orthoclase Feldspar, 7. Quartz, 8. Topaz, 9. Corundum, 10. Diamond.
Graphite is a dark, shiny mineral with a greasy feel and leaves a mark on paper. Talc is a soft mineral that feels powdery and leaves a white mark when scratched. Additionally, talc is not as shiny as graphite.