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Obsidian
Obsidian

Pumice
Pumice



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Obsidian
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Pumice

Properties of Obsidian lan Pumice

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1 Properties
1.1 fisik
1.1.1 atose
5-5.56
Batubara
1 7
1.1.2 ukuran gandum
ora ditrapake
grained nggoleki
1.1.3 rengat
conchoidal
planar
1.1.4 tilas
putih
putih, greenish putih utawa abu-abu
1.1.5 porosity
banget kurang keropos
Highly keropos
1.1.6 luster
vitreous
earthy
1.1.7 kekuatan compressive
0.15 n / mm 251.20 n / mm 2
Slate
0.15 450
1.1.8 cleavage
non-ana
sampurna
1.1.9 kateguhan
ora kasedhiya
3
1.1.10 tartamtu gravitasi
2.6-2.72.86
Granit
0 8.4
1.1.11 transparan
tembus
opaque
1.1.12 Kapadhetan
2.6 g / cm 30.25-0.3 g / cm 3
Granit
0 1400
1.2 situs termal
1.2.1 kapasitas panas tartamtu
0.92 kj / kg k0.87 kj / kg k
Properties of Granulite
0.14 3.2
1.2.2 resistance
tahan panas, impact tahan
impact tahan, meksa tahan