Terlinguaite Mineral Data

General Terlinguaite Information

Chemical Formula:

Hg+Hg++ClO

Composition:

Molecular Weight = 452.63 gm

Mercury 88.63 % Hg 46.08 % Hg₂O / 47.85 % HgO

Chlorine 7.83 % Cl 7.83 % Cl

- % Cl -1.77 % -O=Cl₂

Oxygen 3.53 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

HgHgClO

Environment:

Oxidized portions of mercury deposits.

IMA Status:

Valid Species (Pre-IMA) 1900

Locality:

Terlingua, Brewster Co., Texas, USA. Link to MinDat.org Location Data.

Name Origin:

Named after its locality.

Name Pronunciation:

Terlinguaite + Pronunciation

Synonym:

ICSD 65483

PDF 25-559

Terlinguaite Image

Images:

Terlinguaite

Comments: Beige, massive granular crystals of terlinguaite on pink calcite.
Location: Mariposa mine, Terlingua, Terlingua district, Brewster Co., Texas, USA. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Terlinguaite Crystallography

Axial Ratios:

a:b:c =2.0321:1:1.6057

Cell Dimensions:

a = 12.01, b = 5.91, c = 9.49, Z = 8; beta = 106° V = 647.50 Den(Calc)= 9.29

Crystal System:

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

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

By Intensity(I/I_o): 2.51(1), 3.26(1), 2.81(0.6),

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Forms: ( 1 0 1) ( 1 0 3) ( 3 1 0) ( 2 0 1) ( 1 0 0) ( 1 1 2) ( 0 0 1)

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Crystal Structure:

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Aurivillius K , Folkmarson L , Acta Chemica Scandinavica , 22 (1968) p.2529-2540, The crystal structure of terlinguaite Hg4O2Cl2, Locality: Terlingua, Texas, USA

Physical Properties of Terlinguaite

Cleavage:

{101} Perfect

Color:

Yellow, Greenish yellow, Brown, Olive green.

Density:

8.7

Diaphaneity:

Transparent to translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

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

Habit:

Striated - Parallel lines on crystal surface or cleavage face.

Hardness:

2-3 - Gypsum-Calcite

Luminescence:

Non-fluorescent.

Luster:

Adamantine

Magnetism:

Nonmagnetic

Streak:

light yellow

Optical Properties of Terlinguaite

Gladstone-Dale:

CI meas= -0.188 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.113 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1668,KPDmeas= 0.1782,KC= 0.15
Ncalc = 2.3 - 2.39

Optical Data:

Biaxial (-), a=2.35, b=2.64, g=2.66, bire=0.3100, 2V(Calc)=26, 2V(Meas)=20. Dispersion relatively strong.

Calculated Properties of Terlinguaite

Electron Density:

Bulk Density (Electron Density)=7.59 gm/cc
note: Specific Gravity of Terlinguaite =9.29 gm/cc.

Fermion Index:

Fermion Index = 0.26
Boson Index = 0.74

Photoelectric:

PE_Terlinguaite=1,535.30 barns/electron
U=PE_Terlinguaite x rElectron Density=11659.09 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Terlinguaite is Not Radioactive

Terlinguaite Classification

Dana Class:

10.04.02.01 (10)Oxyhalides and Hydroxyhalides

(10.04)where (A)2 (O,OH) Xq

(10.04.02)Terlinguaite Group

10.04.02.01 Terlinguaite HgHgClO C 2/c 2/m

10.04.02.02 Aurivilliusite! HgHgOI C 2/m 2/m

Strunz Class:

03.DD.20 03 - HALIDES

03.D - Oxyhalides, Hydroxyhalides and Related Double Halides

03.DD -With Hg

03.DD.20 Terlinguaite HgHgClO C 2/c 2/m

Other Terlinguaite Information

References:

NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Terlinguaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Ask about Terlinguaite here :
Ask-A-Mineralogist from the Mineralogical Society of America
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Print or Cut-and-Paste your Terlinguaite Specimen Label here :

Terlinguaite

Hg+Hg++ClO
Dana No: 10.04.02.01 Strunz No: 03.DD.20
Locality:

Notes: