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5 why is Gypsum is a 2 on Mohs hardness scale while topaz is an 8 Can gypsum scratch topaz?
Wiki User
∙ 15y ago
No, gypsum cannot scratch topaz. Minerals with a higher number on the Moh's Hardness Scale can scratch minerals that are lower-numbered, but lower numbers can't scratch higher numbers. A mineral would have to have a number higher than an 8 on the Moh's hardness scale in order to scratch topaz.
Wiki User
∙ 15y ago
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Can you scratch plaster with a fingernail?
It would depend on how loosely the sandstone was cemented. Some sandstone can be crumbled in your clenched fist, and some are extremely hard.
What is gypsm?
Gypsum is a mineral, with the chemical formal CaSO4(H2O)2. It is soft and is an index mineral for Moh's Hardness Scale, with a hardness of 2. It is softer than a fingernail. It is in the monclinic crystal system and is commonly used in agriculture, manufacture of ceramics and sheet rock.
Moh's scale identifies minerals by their relative?
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
What is the scale called to measure hardness of gemstones?
The Mohs scale. # Talc # Gypsum # Calcite # Fluorite # Apatite # Feldspar # Quartz # Topaz # Corundum # Diamond The Mohs scale, however, is an purely ordinal scale. For example, corundum (9) is twice as hard as topaz (8), but diamond (10) is almost four times as hard as corundum. Check the related link for more info.
A minerals hardness with respect to other minerals can be determined by?
scratching the mineral acrros a glass plate
Does gypsum scratch flourite?
No. Gypsum has a hardness on the Mohs scale of 2. Topaz has a hardness on the Mohs scale of 8. This means that topaz ranks much harder than gypsum and that gypsum cannot scratch topaz. Please do not refer to these numbers as absolute hardness. This does not mean that topaz is 4 times as hard as gypsum since they are ranked 8 and 2. The Mohs scale only designates a hardness scale of 1 through 10 so that geologists and mineralogists in the field have a quick way of determining a mineral's identity or eliminating possible options of what the mineral may be.
What is the hardness of a mineral that scratches gypsum?
On the Mineral Scale: 2 General Hardness: Softer than the human finger nail
Which mineral has a hardness of 2?
Gypsum is the mineral listed at 2 on the Mohs hardness scale.
Can calcite scratch other minerals if so which one?
No.because calcite is softer then feldspar
Which minerals on Mohs' hardness scale can be scratched by quartz?
Othoclase, apatite, fluorite, calcite, gypsum, and talc.
What minerals can scrach glass with a hardness of 5.5?
# Talk # Gypsum # Calcite # Fluorite # Apatite # Feldspar # Quartz # Tourmaline # Corundum # Diamond This is Mohs scale of hardness with diamond being the hardest. Therefore minerals 6-10 will scratch a glass of hardness 5.5
Can you scratch plaster with a fingernail?
It would depend on how loosely the sandstone was cemented. Some sandstone can be crumbled in your clenched fist, and some are extremely hard.
Why does selenite gypsum become rounded at a a fast rate when tumbled along a stream bottom?
Gypsum is a soft stone. It only has 2 on the Mohs Hardness Scale. Anything harder than it will polish it.
What mineral is very easily scratched and found in drywalls of houses?
Gypsum (number 2 on the Moh's Hardness Scale)
Which mineral can be scratched by a fingernail?
Talc is one such mineral and as such is a reference mineral in the Mohs Hardness Scale.
What is feldpars hardness?
Orthoclase comes in as 6 on Mohs scale of mineral hardness:- Talc, Gypsum, Calcite, Fluorite, Apatite, Orthoclase, Quartz, Topaz, Corundum, Diamond;
What is mohs scale of hardest and equivalent easy test?
from 1 to 10, talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, diamond. e.g hardness 6 will scratch or abrade apatite but will be scratched or abraded by quartz
