COMPARING OF MINERALS Šárka Lankašová TOPAZ •Silicate mineral •Yellow, wine,pale gray •Perfect cleavage •Conchoidal fracture •8 on the Mohs scale •Glassy luster •White streak •transparent • • C:\Users\Šárka\Desktop\568px-TOPAZE9.jpg C:\Users\Šárka\Desktop\Topaz_red.jpg TALC •Silicate mineral •Perfect cleavage •White,brown ,green •1 on the Mohs scale •Dull or pearly •Translucent •White ,pearly green streak C:\Users\Šárka\Desktop\Talc_block.jpg C:\Users\Šárka\Desktop\4c895.jpg COMPARING • Same properties •Silicate minerals • cleavage •Different properties •Hardness •Color •Luster •Diaphaneity