Mineralogy Database

Wattersite Mineral Data

Search Webmineral :

General Wattersite Information

Help on Chemical  Formula: Chemical Formula: Hg+4Hg++Cr++++++O6
Help on Composition: Composition: Molecular Weight = 549.17 gm
   Chromium   9.47 %  Cr   18.21 % CrO3
   Mercury   73.05 %  Hg   37.98 % Hg2O / 39.44 % HgO
   Oxygen    17.48 %  O
            ______        ______ 
            100.00 %       95.63 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: HgHgCrO6
Help on Environment: Environment: Oxidized zone of mercury deposits.
Help on IMA Status: IMA Status: Approved IMA 1991
Help on Locality: Locality: Clear Creek mercury mine, new Idria district, San Benito County, California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The mineral is named for Mr. Lu Watters(1911-1989), a well known California mineral collector, jazz trumpeter, chef and environmentalist.
Help on Name Pronunciation: Name Pronunciation: Wattersite + Pronunciation Say WATTERSITE
Help on Synonym: Synonym: ICSD 81605
  PDF 45-1381

Wattersite Image

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


Comments: Deep red-black resinous wattersite on quartz.
Location: Clear Creek Mine, San Benito County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Wattersite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9673:1:0.567
Help on Cell Dimensions: Cell Dimensions: a = 11.25, b = 11.63, c = 6.595, Z = 8; beta = 98.15° V = 854.16 Den(Calc)= 8.54
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.655(1), 8.06(0.8), 3.3(0.6),

Physical Properties of Wattersite

Help on Cleavage: Cleavage: None
Help on Color: Color: Bronze, Reddish brown, Black.
Help on Density: Density: 8.91
Help on Diaphaneity: Diaphaneity: Opaque to translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Sub Metallic
Help on Streak: Streak: dark brick red

Optical Properties of Wattersite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.114 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.162 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1909,KPDmeas= 0.1829,KC= 0.1642
Ncalc = 2.4 - 2.46
Help on Optical Data: Optical Data: Biaxial (?), a=2.44-2.52, g=2.7-2.86, bire=0.2600-0.3400
Help on Pleochroism (x): Pleochroism (x): strongly pleochroic.
Help on Pleochroism (y): Pleochroism (y): strongly pleochroic.
Help on Pleochroism (z): Pleochroism (z): strongly pleochroic.
Help on RL Anisotrophism: RL Anisotrophism: Strong, purple, dark blue, bottle green, bottle blue, turquoise-blue, dull greenish blue.
Help on RL Bireflectance: RL Bireflectance: Moderate.
Help on RL Color: RL Color: Greenish white to darker lilac gray, with bright deep red internal reflections.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Wattersite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   19.60   16.00 
 420 nm   21.60   18.10 
 440 nm   22.30   20.40 
 460 nm   21.90   22.00 
 480 nm   21.50   23.90 
 500 nm   21.00   25.90 
 520 nm   20.40   26.70 
 540 nm   19.90   26.00 
 560 nm   19.50   24.50 
 580 nm   18.90   23.10 
 600 nm   18.50   21.90 
 620 nm   18.10   21.00 
 640 nm   17.90   20.40 
 660 nm   17.60   19.80 
 680 nm   17.40   19.40 
 700 nm   17.20   19.10 
Calculated Relative Intensity Colors of Wattersite in Air
   0%   50% 100% 150% 200% 250% 300% 350% 400% 450% 480%

Calculated Properties of Wattersite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.53 gm/cc
note: Specific Gravity of Wattersite =8.91 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.22
Boson Index = 0.78
Help on Photoelectric: Photoelectric: PEWattersite =1,226.26 barns/electron
U=PEWattersite x rElectron Density=9,231.43 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wattersite is Not Radioactive

Wattersite Classification

Help on  Dana Class: Dana Class: (35)Anhydrous Chromates
  (35.04)with miscellaneous formulae
  (35.04.02)Dana Group Wattersite Hg4HgCrO6 C 2/c 2/m
Help on  Strunz Class: Strunz Class: 07.FB.15 07 - SULFATES (SELENATES, TELLURATES)
  07.F - Chromates
  07.FB -With additional O, V, S, Cl
07.FB.15 Wattersite Hg4HgCrO6 C 2/c 2/m

Other Wattersite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.77,p672,1992) OPTIC PROP.(AntBidBlaNic5, MinRec)
Help on See Also: See Also: Links to other databases for Wattersite :
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 Wattersite using:

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

Visit our Advertisers for Wattersite :

Ask about Wattersite 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 Wattersite Specimen Label here :


Dana No: Strunz No: 07.FB.15





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