Deskripsi batubara

Deskripsi coal:
1.batuan: coal,shally coal,coally shale.
2.warna: black,brown.
3.kilap: 50-60%bright,60-70%bright.
4.pecahan: flaty,concoidal,sub concoidal.
5.kekerasan: soft,medium,hard.
6.belahan: horizontal fracture,vertical fracture.
7.mineral: pyrite,resin.
8.kondisi: solid,broken,semi broken.

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