Radtkeite Mineral Data

Radtkeite Mineral Data +

General Radtkeite Information

Chemical Formula:

Hg3S2ClI

Composition:

Molecular Weight = 828.26 gm

Mercury 72.65 % Hg 78.45 % HgO

Sulfur 7.74 % S 7.74 % S^2-

- % S -3.86 % -O=S

Iodine 15.32 % I 15.32 % I

- % I -0.97 % -O=I₂

Chlorine 4.28 % Cl 4.28 % Cl

- % Cl -0.97 % -O=Cl₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Hg₃S₂ClI

Environment:

Secondary Hg mineral.

IMA Status:

Approved IMA 1991

Locality:

McDermitt mercury mine, Humboldt County, Nevada, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Arthur S. Radtke (1936-2004), geologist, U. S. Geological Survey.

Synonym:

IMA1989-030

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Radtkeite Crystallography

Axial Ratios:

a:b:c =1.8456:1:1.444

Cell Dimensions:

a = 16.827, b = 9.117, c = 13.165, Z = 8; beta = 130.17° V = 1,543.30 Den(Calc)= 7.13

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): 2.54(1), 2.65(0.85), 3.89(0.48),

Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
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Pervukhina N V , Vasil ev V I , Naumov D Y , Borisov S V , Magarill S A , The Canadian Mineralogist , 42 (2004) p.87-94, The crystal structure of synthetic radtkeite, Hg3S2ClI

Physical Properties of Radtkeite

Cleavage:

[010] Perfect, [001] Very Good, [100] Very Good

Color:

Bright yellow orange, Orange.

Density:

Diaphaniety:

Translucent to Opaque

Fracture:

Hackly - Jagged, torn surfaces, (e.g. fractured metals).

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

2-3 - Gypsum-Calcite

Luster:

Adamantine

Streak:

yellow orange

Optical Properties of Radtkeite

Gladstone-Dale:

CI meas= 0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1403,KPDmeas= 0.1429,KC= 0.1448

Optical Data:

Biaxial (+), b=2

Calculated Properties of Radtkeite

Electron Density:

r_electron=5.78 gm/cc
note: r_Radtkeite=7.00 gm/cc.

Fermion Index

Fermion Index = 0.21999
Boson Index = 0.78001

Photoelectric:

PE_Radtkeite=1,308.53 barns/electron
U=PE_Radtkeite x r_electron=7,564.32 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Radtkeite is Not Radioactive

Radtkeite Classification

Dana Class:

10.3.6.1 (10)Oxyhalides and Hydroxyhalides

(10.3)where (A)3 (O,OH)2 Xq

(10.3.6)Dana Group

10.3.6.1 Radtkeite Hg3S2ClI C 2/m 2/m

Strunz Class:

II/F.14-30 II - Sulfides and sulphosalts

II/F - Sulfides with nonmetallic properties, Halogensulfides (Sulfohalides) with Mercury/Lead and related compounds

II/F.14 - Corderoite - Arzakite series

II/F.14-05 Kenhsuite! Hg3S2Cl2 A2mm mm2

II/F.14-10 Corderoite Hg3S2Cl2 I 2₁3 2 3

II/F.14-20 Grechishchevite Hg3S2(Br,Cl,I)2 P 4₂m-,P 4m2,P 4mm,P 4/mmm Tetra

II/F.14-30 Radtkeite Hg3S2ClI C 2/m 2/m

II/F.14-40 Lavrentievite Hg3S2(Cl,Br)2 P 2/m,P 2,Pm Mono

II/F.14-50 Arzakite Hg3S2(Br,Cl)2 P 2/m,P 2,Pm Mono

Other Radtkeite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin 89:1833) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Radtkeite :
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 -École des Mines de Paris

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

Radtkeite

Hg3S2ClI
Dana No: 10.3.6.1 Strunz No: II/F.14-30
Locality:

Notes: