Hypercinnabar Mineral Data

Hypercinnabar Mineral Data +

General Hypercinnabar Information

Chemical Formula:

HgS

Composition:

Molecular Weight = 232.66 gm

Mercury 86.22 % Hg

Sulfur 13.78 % S

______

100.00 %

Empirical Formula:

HgS

Environment:

Microscopic grains in metacinnabar.

IMA Status:

Approved IMA 1978

Locality:

Mt. Diablo mine, Contra Costa County, California, USA. Link to MinDat.org Location Data.

Name Origin:

Named for its trimorphous relationship with cinnabar and metacinnabar.

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Hypercinnabar Crystallography

Axial Ratios:

a:c = 1:2.01569

Cell Dimensions:

a = 7.01, c = 14.13, Z = 12; V = 601.32 Den(Calc)= 7.71

Crystal System:

HexagonalSpace Group: Unk

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

By Intensity(I/I_o): 1.892(1), 1.98(1), 3.08(1),

Physical Properties of Hypercinnabar

Cleavage:

None

Color:

Red, Purple black.

Density:

7.43

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

3 - Calcite

Luster:

Adamantine

Streak:

reddish black

Optical Properties of Hypercinnabar

Optical Data:

Uniaxial (+), w=2.61, e=2.85, bire=0.2400.

RL Anisotrophism:

Distinct in oil.

RL Color:

Grayish white.

Calculated Properties of Hypercinnabar

Electron Density:

r_electron=6.36 gm/cc
note: r_{Hypercinnabar}=7.71 gm/cc.

Fermion Index

Fermion Index = 0.26141
Boson Index = 0.73859

Photoelectric:

PE_{Hypercinnabar}=1,479.61 barns/electron
U=PE_{Hypercinnabar} x r_electron=9,414.31 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hypercinnabar is Not Radioactive

Hypercinnabar Classification

Dana Class:

2.8.8.1 (2)Sulfides - Including Selenides and Tellurides

(2.8)where Am Bn Xp, with (m+n):p=1:1

(2.8.8)Dana Group

2.8.8.1 Hypercinnabar HgS Unk Hex

Strunz Class:

II/C.18-20 II - Sulfides and sulphosalts

II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1

II/C.18 - Cinnabarite - Hypercinnabarite series

II/C.18-10 Cinnabar HgS P 3₁21,P 3₂21 3 2

II/C.18-20 Hypercinnabar HgS Unk Hex

Other Hypercinnabar Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Hypercinnabar :
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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Hypercinnabar

HgS
Dana No: 2.8.8.1 Strunz No: II/C.18-20
Locality:

Notes: