Grumiplucite Mineral Data

Grumiplucite Mineral Data +

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General Grumiplucite Information

Chemical Formula:

HgBi2S4

Composition:

Molecular Weight = 746.81 gm

Mercury 26.86 % Hg

Bismuth 55.97 % Bi

Sulfur 17.17 % S

______

100.00 %

Empirical Formula:

HgBi₂S₄

Environment:

Cavities in quartz-carbonate veins at the mine.

IMA Status:

Approved IMA 1998 (Dana # Added)

Locality:

Found in the Levigliani mercury mine in the Apuan Alps, Tuscany, Italy. Link to MinDat.org Location Data.

Name Origin:

Named after the amateur mineralogical organization Gruppo Mineralogico e Paleontologico Lucchese, members of which provided the specimens for study.

Synonym:

ICSD 14189

IMA1997-021

PDF 51-1552

Grumiplucite Image

Images:

Grumiplucite

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

Axial Ratios:

a:b:c =3.4946:1:3.446

Cell Dimensions:

a = 14.164, b = 4.053, c = 13.967, Z = 4; beta = 118.283° V = 706.08 Den(Calc)= 7.02

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.05(1), 2.914(0.8), 2.865(0.5),3.86(0.5), 3.55(0.5),

Physical Properties of Grumiplucite

Cleavage:

[001] Perfect

Color:

Grayish black.

Diaphaniety:

Opaque

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Luster:

Metallic

Optical Properties of Grumiplucite

RL Anisotrophism:

Distinct.

RL Bireflectance:

Low.

RL Color:

Creamy white.

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**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	260%
R₁
R₂

**Calculated Relative Intensity Colors of Grumiplucite in Oil**
Relative Intensity	0%	50%	100%	150%	200%	250%	300%	350%	400%	410%
R₁
R₂

Calculated Properties of Grumiplucite

Electron Density:

r_electron=5.83 gm/cc
note: r_Grumiplucite=7.02 gm/cc.

Fermion Index

Fermion Index = 0.0824
Boson Index = 0.9176

Photoelectric:

PE_Grumiplucite=1,543.88 barns/electron
U=PE_Grumiplucite x r_electron=8,997.67 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Grumiplucite is Not Radioactive

Grumiplucite Classification

Dana Class:

3.7.11.2 (3)Sulfides - Sulfosalts

(3.7)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(3.7.11)Dana Group

3.7.11.1 Livingstonite HgSb4S8 A2/a 2/m

3.7.11.2 Grumiplucite ! HgBi2S4 C 2/m 2/m

Strunz Class:

II/E.13-20 II - Sulfides and sulphosalts

II/E - Sulfosalts (S : As,Sb,Bi = x) Sulfosalts with predominant Thallium and Mercury, x = 4.0 - 1.6

II/E.13 - Livingstonite - Vaughanite series

II/E.13-10 Livingstonite HgSb4S8 A2/a 2/m

II/E.13-20 Grumiplucite HgBi2S4 C 2/m 2/m

II/E.13-30 Simonite TlHgAs3S6 P 2₁/n 2/m

II/E.13-40 Vrbaite Tl4Hg3Sb2As8S20 C mca 2/m 2/m 2/m

II/E.13-42 Edenharterite TlPbAs3S6 F dd2 mm2

II/E.13-43 Jentschite! TlPbAs2SbS6 P 2₁/n 2/m

II/E.13-45 Hutchinsonite (Pb,Tl)2As5S9 P bca 2/m 2/m 2/m

II/E.13-50 Lorandite TlAsS2 P 2₁/a 2/m

II/E.13-60 Weissbergite TlSbS2 P1 1

II/E.13-70 Tvalchrelidzeite Hg12(Sb,As)8S15 P1 1

II/E.13-80 Vaughanite TlHgSb4S7 P1 ? 1

Other Grumiplucite Information

References:

NAME( CanMin, 8/99) PHYS. PROP.(AmMin, V84, p1465) OPTIC PROP.(AmMin, V84, p1465)

See Also:

Links to other databases for Grumiplucite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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Print or Cut-and-Paste your Grumiplucite Specimen Label here :

Grumiplucite

HgBi2S4
Dana No: 3.7.11.2 Strunz No: II/E.13-20
Locality:

Notes: