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it is sometimes white, and also sometimes some look like regular rocks

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Density of gypsum kg per cubicmeter?

Solid gypsum density is 2312 to 2322 kg/cubic meter or 2.312 to 2.322 g/cc. These are "as measured" values indicating some variation in the gypsum crystals. By the molecular formula, calcium sulfate with two water molecules should weigh 2.308 gm/cc. If not solid, then broken gypsum density ranges from 1290 to 1600 kg/m3.


What is fire code c drywall?

This boardis similar in composition to Type X drywall, except that it has more glass fibers, and, it has another ingredient in the gypsum core. This ingredient is a shrinkage-compensating additive, a form of vermiculite. When exposed to high heat, the gypsum core shrinks but the shrinkage-compensating element expands at about the same rate as shrinkage occurs in the waterdepleted gypsum. The gypsum core then is more stable in a fire and remains in place even after the combined water in the gypsum has been driven off.


What does apatite smell like?

None- appetite is degree of hunger


What does mica smell like?

This is how Mica looks like: http://www.answersincreation.org/curriculum/geology/MicaSheetUSGOV.jpg A refined Mica would looks like crystal.


5 why is Gypsum is a 2 on Mohs hardness scale while topaz is an 8 Can gypsum scratch topaz?

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.