c22fc316_TIFIKASI_BATUAN___Learn_Mining__Grain_Size
[Hardness] hard [Composition] clean quartz [Other] white to brown [Rock Type] Sandstone [Grain Size] 
coarse
c o a r s e
m i x e d
f i n e
c o a r s e o r f i n e
TABEL IDENTIFIKASI BATUAN - Learn Mining
Grain Size