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lanarkite
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Lanarkite
Lanarkite is a mineral, a form of lead sulfate with formula Pb2(SO4)O. It was originally found at Leadhills in the Scottish county of Lanarkshire, hence the name. It forms white or light green, acicular monoclinic prismatic crystals, usually microscopic in size. It is an oxidation product of galena.

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lanarkite
nf. lanarkite

Webster's Revised Unabridged Dictionary (1913)Download this dictionary
Lanarkite
(n.)
A mineral consisting of sulphate of lead, occurring either massive or in long slender prisms, of a greenish white or gray color.
  

Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
Mineralogy Database DictionaryDownload this dictionary
Lanarkite

General Information:
 Chemical Formula:
Pb2(SO4)O
 Composition:
(Molecular Weight = 526.46 gm)
Lead 78.71 % Pb
Sulfur 6.09 % S 
Oxygen 15.20 % O 
 Empirical Formula:
Pb2(SO4)O
 Locality:
LEADH
Physical Properties:
 Cleavage:
[201] Perfect, [401] Indistinct, [201] Indistinct
 Color:
greenish white, gray, gray white, yellow, or light yellow.
 Density:
6.92
 Diaphaniety:
Transparent to Translucent
 Hardness:
2-2.5 - Gypsum-Finger Nail
 Luminescence:
Fluorescent.
 Luster:
Adamantine - Resinous
 Streak:
white
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