Moh's Scale of Mineral Hardness ANSP.2010.069.Artifact
Apatite is a group of phosphate minerals, such as hydroxyapatite, fluorapatite, chlorapatite and bromapatite. Apatite has a Mohs Scale hardness of 5. Glass General note Glass is an amorphous or non-crystalline, solid material. Glasses are typically fragile and often optically transparent. Glass ranks as a 5.5 in this particular Moh's Hardness ...
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