조회수
9:39
Mineral identification using Luster, Color, Streak, Hardness and Breakage
4:30
Mineral Identification...Cleavage vs. Fracture
8:27
Quick Mineral Identification
19:17
Rock and Mineral Identification
3:26
MINERALS for Kids - Classification and Uses - Science
4:56
Mineral Identification: Hardness
2:24
Identifying rocks & minerals using the Mohs hardness test
2:28
What minerals show fluorescence under UV light？
