n. form of silver sulfide

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General Information:
 Chemical Formula:
Ag2S
 Composition:
(Molecular Weight = 247.80 gm)
Silver 87.06 % Ag
Sulfur 12.94 % S 
 Empirical Formula:
Ag2S
 Name Origin:
From the Greek, akanta, meaning "arrow." After the Latin, argentum, meaning "silver". Argentite is stable above 179 C. Acanthite is stable below 179 C.
Physical Properties:
 Cleavage:
[001] Poor, [110] Poor
 Color:
lead gray, gray, or black.
 Density:
7.2 - 7.4, Average = 7.3
 Diaphaniety:
Opaque
 Habits:
Blocky - Crystal shape tends to be equant (e.g. feldspars)., Skeletal - Crystals form crude outlines with missing faces., Arborescent - "Tree like" growths of branched systems (e.g. s ilver).
 Hardness:
2-2.5 - Gypsum-Finger Nail
 Luminescence:
None.
 Luster:
Metallic
 Streak:
shining black
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ARGENTITE

B: (Biologi) akantit

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