Gianellaite Mineral Data

General Gianellaite Information

Chemical Formula:

Hg4(SO4)N2

Composition:

Molecular Weight = 926.44 gm

Mercury 86.61 % Hg 90.06 % Hg₂O

Sulfur 3.46 % S 8.64 % SO₃

Nitrogen 3.02 % N 5.62 % (NH₄)₂O

Oxygen 6.91 % O

______ ______

100.00 % 104.32 % = TOTAL OXIDE

Empirical Formula:

Hg₄(SO₄)N₂

Environment:

Secondary mineral coating fracture surfaces in oxidized portions of a hydrothermal mercury deposit, the nitrogen likely derived from decaying organic matter.

IMA Status:

Approved IMA 1977

Locality:

Perry pit, Mariposa mine, Terlingua district, Brewster Co., Texas. Link to MinDat.org Location Data.

Name Origin:

Named for Vincent Paul Gianella (1886-1983), Head of the Department of Geology, MacKay School of Mines, University of Nevada, Reno, Nevada, USA.

Name Pronunciation:

Gianellaite + Pronunciation

Gianellaite Image

Images:

Gianellaite

Comments: Yellow crystalline coatings of gianellaite on calcite.
Location: Mariposa Mine, Terlingua, Brewster County, Texas, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Gianellaite Crystallography

Cell Dimensions:

a = 9.5215, Z = 4; V = 863.21 Den(Calc)= 7.13

Crystal System:

Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: F43m

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

By Intensity(I/I_o): 2.743(1), 2.872(1), 5.511(0.8),

Physical Properties of Gianellaite

Color:

Yellow, Straw yellow.

Density:

7.19

Hardness:

3 - Calcite

Streak:

light yellow

Optical Properties of Gianellaite

Gladstone-Dale:

CI meas= -0.041 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.05 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1522,KPDmeas= 0.1509,KC= 0.145
Ncalc = 2.03 - 2.04

Optical Data:

Isotropic, n=2.085.

Calculated Properties of Gianellaite

Electron Density:

Bulk Density (Electron Density)=5.93 gm/cc
note: Specific Gravity of Gianellaite =7.19 gm/cc.

Fermion Index:

Fermion Index = 0.29
Boson Index = 0.71

Photoelectric:

PE_Gianellaite=1,486.72 barns/electron
U=PE_Gianellaite x rElectron Density=8,815.30 barns/cc.

Radioactivity:

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

Gianellaite Classification

Dana Class:

28.02.04.01 (28)Anhydrous Acid and Sulfates

(28.02)(A+)2 XO4

(28.02.04)Dana Group

28.02.04.01 Gianellaite Hg4(SO4)N2 F43m 4 3m

Strunz Class:

03.DD.30 03 - HALIDES

03.D - Oxyhalides, Hydroxyhalides and Related Double Halides

03.DD -With Hg

03.DD.30 Gianellaite Hg4(SO4)N2 F43m 4 3m

03.DD.30 Mosesite Hg2N(Cl,SO4,MoO4,CO3)•(H2O) F43m 4 3m

Other Gianellaite Information

References:

NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Gianellaite :
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

Search for Gianellaite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Gianellaite :

A Bijoux Google Search for Gianellaite
Adam's Minerals Google Search for Gianellaite
Cape Minerals Google Search for Gianellaite
Dakota Matrix Minerals Google Search for Gianellaite
Excalibur Mineral Corp. Google Search for Gianellaite
Exceptional Minerals Google Search for Gianellaite
John Betts Fine Minerals Search for Gianellaite
McDougall Minerals Google Search for Gianellaite
Mineral News Website Link
Rock and Mineral Shows Google Search for Gianellaite
Weinrich Minerals, Inc. Google Search for Gianellaite

Ask about Gianellaite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Gianellaite

Hg4(SO4)N2
Dana No: 28.02.04.01 Strunz No: 03.DD.30
Locality:

Notes: