كالسيت المعرفة

Use and ApplicationsFormation Processesin Earth HistoryGalleryانظر أيضًاللاستزادةAncient Egyptians carved many items out of calcite, relating it to their goddess Bast, whose name contributed to the term alabasterbecause of the close association. Many other cultures have used the material for similar carved objects and applications. A transparent variety of calcite known as Iceland spar may have been used by Vikingsfor navigatin...