Mutnovskite Mineral Data (original) (raw)
General Mutnovskite Information
Chemical Formula:
Pb2AsS3(I,Cl,Br)
Composition:
Molecular Weight = 670.21 gm
Bismuth 0.62 % Bi
Arsenic 10.96 % As
Lead 61.52 % Pb
Selenium 0.24 % Se
Sulfur 14.26 % S
Iodine 8.90 % I
Bromine 1.07 % Br
Chlorine 2.43 % Cl
______
100.00 %
Empirical Formula:
Pb1.99As0.98Bi0.02S2.98Se0.02I0.47Cl0.46Br0.09
Environment:
Volcanic sublimates (250 deg C) in fumaroles.
IMA Status:
Approved IMA 2004 (Dana # Added)
Locality:
Mutnovsky volcano, Kamchatka Peninsula, Russia Link to MinDat.org Location Data.
Name Origin:
Named for the locality.
Synonym:
IMA2004-032
Mutnovskite Image
Images:
 |
Mutnovskite Comments: SEM of blocky crystals of mutnovskite. Needle-like crystals of unknown Pb-Bi-As halogensulfosalts, currently under study, appear on the left. AmMin, v91, p22. Location: Mutnovsky volcano, Kamchatka Peninsula, Russian Federation.Scale: See Image. © American Mineralogist |
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Mutnovskite Crystallography
Axial Ratios:
a:b:c =1.7289:1:1.4018
Cell Dimensions:
a = 11.543, b = 6.6764, c = 9.359, Z = 4; V = 721.26 Den(Calc)= 6.17
Crystal System:
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma
X Ray Diffraction:
By Intensity(I/Io): 3.19(1)(212), 3.34(0.73)(020), 4.37(0.67)(210),2.648(0.66)(410), 2.715(0.61)(022), 4.69(0.32)(002), 2.539(0.31)(213), 1.894(0.3)(232), 2.455(0.29)(402),
Crystal Structure:
Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above
| | Zelenski M , Balic-Zunic T , Bindi L , Garavelli A , Makovicky E , Pinto D , Vurro F , American Mineralogist , 91 (2006) p.21-28, First occurrence of iodine in natural sulfosalts: the case of mutnovskite, Pb2AsS3(I,Cl,Br),, a new mineral from Mutnovsky volcano, Kamchatka Peninsula, Russian Federation, Locality: Mutnovsky volcano, Kamchatka Peninsula, Russian Federation | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Mutnovskite
Cleavage:
Unknown, Unknown, Unknown
Color:
Ruby red, Brownish red.
Diaphaneity:
Translucent to subtranslucent
Fracture:
Unknown - Minerals too small to observe fractures.
Habit:
Blocky - Crystal shape tends to be equant (e.g. feldspars).
Habit:
Microscopic Crystals - Crystals visible only with microscopes.
Habit:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Hardness:
2 - Gypsum
Luster:
Subadamantine
Optical Properties of Mutnovskite
Optical Data:
NCalc= 1.19 - from Gladstone-Dale relationship (KC = 0.0313) where Ncalc=Dcalc*KC+1
RL Anisotrophism:
Not visible because of orange internal reflections.
RL Color:
Silvery lead gray with strong orange internal reflections.
RL Pleochroism:
Not visible because of orange internal reflections.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Mutnovskite in Air
| λ | R1 | R 2 |  |
∑ R1(λ) | ∑ R2(λ) |
|---|---|---|---|---|---|
| 400 nm | 39.20 | 44.10 |  |
||
| 420 nm | 38.60 | 39.40 |  |
||
| 440 nm | 36.50 | 37.60 |  |
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| 460 nm | 35.30 | 36.20 |  |
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| 470 nm | 34.20 | 34.60 |  |
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| 480 nm | 33.90 | 34.20 |  |
||
| 500 nm | 33.70 | 34.00 |  |
||
| 520 nm | 33.60 | 33.80 |  |
||
| 540 nm | 33.40 | 33.60 |  |
||
| 546 nm | 33.20 | 33.50 |  |
||
| 560 nm | 32.90 | 33.10 |  |
||
| 580 nm | 32.70 | 32.80 |  |
||
| 589 nm | 32.50 | 32.70 |  |
||
| 600 nm | 32.20 | 32.50 |  |
||
| 620 nm | 31.90 | 32.10 |  |
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| 640 nm | 31.70 | 31.90 |  |
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| 650 nm | 31.40 | 31.70 |  |
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| 660 nm | 31.20 | 31.40 |  |
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| 680 nm | 30.90 | 31.00 |  |
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| 700 nm | 30.70 | 30.80 |  |
Calculated Relative Intensity Colors of Mutnovskite in Air
| RelativeIntensity | 0% | 30% | 60% | 90% | 100% | 120% | 150% | 180% | 210% | 240% | 270% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| R1 | |||||||||||
| R2 |
Calculated Properties of Mutnovskite
Electron Density:
Bulk Density (Electron Density)=5.18 gm/cc
note: Specific Gravity of Mutnovskite =6.17 gm/cc.
Fermion Index:
Fermion Index = 0.13
Boson Index = 0.87
Photoelectric:
PEMutnovskite =1,182.91 barns/electron
U=PEMutnovskite x rElectron Density=6,129.28 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mutnovskite is Not Radioactive
Mutnovskite Classification
Dana Class:
02.15.07.01 (02)Sulfides - Including Selenides and Tellurides
(02.15)(Chlorides)
(02.15.07)Dana Group
02.15.07.01 Mutnovskite! Pb2AsS3(I,Cl,Br) P nma 2/m 2/m 2/m
Strunz Class:
02.GC.50 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
02.G - Sulfarsenites, sulfantimonites, sulfbismuthites
02.GC -Poly-sulfarsenites
02.GC.50 Mutnovskite! Pb2AsS3(I,Cl,Br) P nma 2/m 2/m 2/m
Other Mutnovskite Information
References:
NAME( AmMin, v91, p21) PHYS. PROP.(AmMin, v91, p21) OPTIC PROP.(AmMin, v91, p21)
See Also:
Links to other databases for Mutnovskite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Mutnovskite
Pb2AsS3(I,Cl,Br)
Dana No: 02.15.07.01 Strunz No: 02.GC.50
Locality:
Notes: