Mineralogy Database

Grumiplucite Mineral Data

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General Grumiplucite Information

Help on Chemical  Formula: Chemical Formula: HgBi2S4
Help on Composition: Composition: Molecular Weight = 746.81 gm
   Mercury  26.86 %  Hg
   Bismuth  55.97 %  Bi
   Sulfur   17.17 %  S
           100.00 % 
Help on Empirical Formula: Empirical Formula: HgBi2S4
Help on Environment: Environment: Cavities in quartz-carbonate veins at the mine.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Found in the Levigliani mercury mine in the Apuan Alps, Tuscany, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the amateur mineralogical organization Gruppo Mineralogico e Paleontologico Lucchese, members of which provided the specimens for study.
Help on Name Pronunciation: Name Pronunciation: Grumiplucite + Pronunciation Say GRUMIPLUCITE
Help on Synonym: Synonym: ICSD 14189
  PDF 51-1552

Grumiplucite Image

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Comments: Gray crystals of grumiplucite on quartz.
Location: Levigliani, Apuan Alps, Lucca Province, Tuscany, Italy. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Grumiplucite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =3.4946:1:3.446
Help on Cell Dimensions: Cell Dimensions: a = 14.164, b = 4.053, c = 13.967, Z = 4; beta = 118.283° V = 706.08 Den(Calc)= 7.02
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.05(1), 2.914(0.8), 2.865(0.5),3.86(0.5), 3.55(0.5),

Physical Properties of Grumiplucite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Grayish black.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Luster: Luster: Metallic

Optical Properties of Grumiplucite

Help on RL Anisotrophism: RL Anisotrophism: Distinct.
Help on RL Bireflectance: RL Bireflectance: Low.
Help on RL Color: RL Color: Creamy white.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Grumiplucite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 470 nm   35.70   37.80 
 546 nm   35.40   37.50 
 589 nm   34.90   37.00 
 650 nm   33.90   35.80 
Standardized Intensity (100%) Reflection Spectra of Grumiplucite in Oil
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 470 nm   23.20   25.00 
 546 nm   23.00   25.00 
 589 nm   22.00   24.00 
 650 nm   20.40   22.70 
Calculated Relative Intensity Colors of Grumiplucite in Air
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 260%
Calculated Relative Intensity Colors of Grumiplucite in Oil
   0%   50% 100% 150% 200% 250% 300% 350% 400% 410%

Calculated Properties of Grumiplucite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.83 gm/cc
note: Specific Gravity of Grumiplucite =7.02 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.08
Boson Index = 0.92
Help on Photoelectric: Photoelectric: PEGrumiplucite =1,543.88 barns/electron
U=PEGrumiplucite x rElectron Density=8,997.68 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Grumiplucite is Not Radioactive

Grumiplucite Classification

Help on  Dana Class: Dana Class: (03)Sulfides - Sulfosalts
  (03.07)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.07.11)Dana Group Livingstonite HgSb4S8 A2/a 2/m Grumiplucite! HgBi2S4 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 02.JA.05b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.J - Sulfosalts of PbS Archetype
  02.JA -Galena derivatives with little or no Pb
02.JA.05b Grumiplucite! HgBi2S4 C 2/m 2/m

Other Grumiplucite Information

Help on References: References: NAME( CanMin, 8/99) PHYS. PROP.(AmMin, V84, p1465) OPTIC PROP.(AmMin, V84, p1465)
Help on See Also: See Also: Links to other databases for Grumiplucite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 02.JA.05b





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