Aurivilliusite Mineral Data

Aurivilliusite Mineral Data

General Aurivilliusite Information

Chemical Formula:

Hg+Hg++OI

Composition:

Molecular Weight = 541.59 gm

Mercury 74.07 % Hg 38.51 % Hg₂O / 39.99 % HgO

Iodine 22.73 % I 22.73 % I

- % I -1.43 % -O=I₂

Bromine 0.15 % Br 0.15 % Br

- % Br -0.01 % -O=Br₂

Chlorine 0.07 % Cl 0.07 % Cl

- % Cl -0.01 % -O=Cl₂

Oxygen 2.98 % O

______ ______

100.00 % 99.99 % = TOTAL OXIDE

Empirical Formula:

HgHgO_1.01I_0.97Br_0.01Cl_0.01

Environment:

In a cm-wide quartz vein with other mercury compounds. Related to terlinguaite; new structure type.

IMA Status:

Approved IMA 2004 (Dana # Added)

Locality:

A small prospect pit near the long-abandoned Clear Creek mercury mine, New Idria district, San Benito County, California, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Karin Aurivillius (1920-1982), chemist-crystallographer at the University of Lund, Sweden, who determined the crystal structure of numerous synthetic Hg compounds.

Synonym:

IMA2002-022

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Aurivilliusite Crystallography

Axial Ratios:

a:b:c =2.5189:1:0.959

Cell Dimensions:

a = 17.58, b = 6.979, c = 6.693, Z = 8; beta = 101.71° V = 804.08 Den(Calc)= 8.95

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): 3.275(1)(002), 2.873(0.8)(600), 2.993(0.8)(221),8.547(0.7)(200), 1.878(0.5)(223), 2.404(0.5)(602,421,222),

Physical Properties of Aurivilliusite

Cleavage:

[100] Distinct

Color:

Dark gray black.

Diaphaniety:

Opaque

Fracture:

Brittle - Uneven - Very brit6tle fracture producing uneven fragments.

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Luster:

Metallic

Streak:

dark red brown

Optical Properties of Aurivilliusite

RL Color:

Resembles cinnabar, light sensitive, no internal reflections, shows red light coalescing phenomenon.

Calculated Properties of Aurivilliusite

Electron Density:

r_electron=7.27 gm/cc
note: r_{Aurivilliusite}=8.95 gm/cc.

Fermion Index

Fermion Index = 0.22371
Boson Index = 0.77629

Photoelectric:

PE_{Aurivilliusite}=1,384.79 barns/electron
U=PE_{Aurivilliusite} x r_electron=10069.53 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Aurivilliusite is Not Radioactive

Aurivilliusite Classification

Dana Class:

10.4.2.2 (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.06-11 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 Aurivilliusite Information

References:

NAME( CanMin, 42:1904) PHYS. PROP.(CanMin, 42:1904) OPTIC PROP.(CanMin, 42:1904)

See Also:

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

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Aurivilliusite

Hg+Hg++OI
Dana No: 10.4.2.2 Strunz No: III/D.06-11
Locality:

Notes: