Mineralogy Database

Gianellaite Mineral Data

Search Webmineral :

General Gianellaite Information

Help on Chemical  Formula: Chemical Formula: Hg4(SO4)N2
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: Hg4(SO4)N2
Help on Environment: Environment: Secondary mineral coating fracture surfaces in oxidized portions of a hydrothermal mercury deposit, the nitrogen likely derived from decaying organic matter.
Help on IMA Status: IMA Status: Approved IMA 1977
Help on Locality: Locality: Perry pit, Mariposa mine, Terlingua district, Brewster Co., Texas. Link to MinDat.org Location Data.
Help on Name Origin: 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.
Help on Name Pronunciation: Name Pronunciation: Gianellaite + Pronunciation Say GIANELLAITE

Gianellaite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


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

Help on Cell Dimensions: Cell Dimensions: a = 9.5215, Z = 4; V = 863.21 Den(Calc)= 7.13
Help on Crystal System: Crystal System: Isometric - Hextetrahedral H-M Symbol (4 3m) Space Group: F43m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.743(1), 2.872(1), 5.511(0.8),

Physical Properties of Gianellaite

Help on Color: Color: Yellow, Straw yellow.
Help on Density: Density: 7.19
Help on Hardness: Hardness: 3 - Calcite
Help on Streak: Streak: light yellow

Optical Properties of Gianellaite

Help on Gladstone-Dale: 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
Help on Optical Data: Optical Data: Isotropic, n=2.085.

Calculated Properties of Gianellaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.93 gm/cc
note: Specific Gravity of Gianellaite =7.19 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.29
Boson Index = 0.71
Help on Photoelectric: Photoelectric: PEGianellaite =1,486.72 barns/electron
U=PEGianellaite x rElectron Density=8,815.30 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Gianellaite is Not Radioactive

Gianellaite Classification

Help on  Dana Class: Dana Class: (28)Anhydrous Acid and Sulfates
  (28.02)(A+)2 XO4
  (28.02.04)Dana Group Gianellaite Hg4(SO4)N2 F43m 4 3m
Help on  Strunz Class: 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

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: 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:

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

Visit our Advertisers 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 Espaņol

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


Dana No: Strunz No: 03.DD.30





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.