Terlinguaite Mineral Data

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.

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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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

Diaphaniety:

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

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:

r_electron=7.59 gm/cc
note: r_Terlinguaite=9.29 gm/cc.

Fermion Index

Fermion Index = 0.26768
Boson Index = 0.73232

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Terlinguaite is Not Radioactive

Terlinguaite Classification

Dana Class:

10.4.2.1 (10)Oxyhalides and Hydroxyhalides

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

(10.4.2)Dana Group

10.4.2.1 Terlinguaite HgHgClO C 2/c 2/m

10.4.2.2 Aurivilliusite! HgHgOI C 2/m 2/m

Strunz Class:

III/D.06-10 III - Halogenides

III/D - Oxi-halogenides with mercury

III/D.06 - Terlinguaite - Comancheite

III/D.06-10 Terlinguaite HgHgClO C 2/c 2/m

III/D.06-11 Aurivilliusite! HgHgOI C 2/m 2/m

III/D.06-12 Hanawaltite Hg6Hg[Cl,(OH)]2O3 Pbma 2/m 2/m 2/m

III/D.06-13 Tedhadleyite! HgHg10O4I2(Cl1.16Br0.84)2 A1 1

III/D.06-20 Poyarkovite Hg3ClO C 2/c 2/m

III/D.06-30 Kadyrelite Hg4(Br,Cl)2O I a3d 4/m 3 2/m

III/D.06-40 Eglestonite Hg6Cl3O(OH)(?) I a3d 4/m 3 2/m

III/D.06-45 Vasilyevite! (Hg2)10O6I3Cl(CO3) P1 1

III/D.06-50 Mosesite Hg2N(Cl,SO4,MoO4,CO3)·(H2O) F43m 4 3m

III/D.06-60 Gianellaite Hg4(SO4)N2 F43m 4 3m

III/D.06-70 Kleinite Hg2N(Cl,SO4)·n(H2O) C63/mmc 6/m 2/m 2/m

III/D.06-80 Pinchite Hg5O4Cl2 I bam 2/m 2/m 2/m

III/D.06-90 Comancheite Hg13(Cl,Br)8O9 Pnnm,Pnn2 Ortho

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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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

Terlinguaite

Hg+Hg++ClO
Dana No: 10.4.2.1 Strunz No: III/D.06-10
Locality:

Notes: