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Obsidian
Obsidian

Batubara
Batubara



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Obsidian
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Batubara

Properties of Obsidian lan Batubara

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Properties

atose

ukuran gandum

rengat

tilas

porosity

luster

kekuatan compressive

cleavage

kateguhan

tartamtu gravitasi

transparan

Kapadhetan

kapasitas panas tartamtu

resistance

 
5-5.5
-
conchoidal
putih
banget kurang keropos
vitreous
0.15 n / mm 2
-
-
2.6-2.7
tembus
2.6 g / cm 3
0.92 kj / kg k
tahan panas, impact tahan
 
1-1.5
medium kanggo nggoleki coarse grained
conchoidal
ireng
kurang keropos
kurang kanggo vitreous kanggo submetallic
-
-
-
1.1-1.4
opaque
1100-1400 g / cm 3
1.32 kj / kg k
tahan panas