Scacchite Mineral Data

Scacchite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About


Desert Winds Gems and Minerals
[Mineral Galleries] [About Me] [e-Bay Items] [Latest News] [How to Order]
A Diverse Selection of Beautifully Unique Gem & Mineral Specimens
Desert Winds Gems & Minerals • For All Levels of Collectors Worldwide
Aesthetic & Rare Mineral Specimens • Regular Updates


General Scacchite Information

Help on Chemical Formula: Chemical Formula: MnCl2
Help on Composition: Composition: Molecular Weight = 125.84 gm
   Manganese  43.66 %  Mn   56.37 % MnO
   Chlorine   56.34 %  Cl   56.34 % Cl
                -   %   Cl  -12.71 % -O=Cl2   
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+Cl2
Help on Environment: Environment: Product of fumarolic activity.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1869
Help on Locality: Locality: Vesuvius, Campania, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Arcangelo Scacchi (1810-1893), Italian mineralogist, University of Naples, Naples, Italy.
Help on Name Pronunciation: Name Pronunciation: Scacchite + Pronunciation Say SCACCHITE
Help on Synonym: Synonym: ICSD 33752
  PDF 22-720
 

Scacchite Image

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

Scacchite

Comments: Deliquescent reddish scacchite crust on volcanic rock.
Location: Vesuvius, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Scacchite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:4.75
Help on Cell Dimensions: Cell Dimensions: a = 3.68, c = 17.48, Z = 3; V = 205.01 Den(Calc)= 3.06
Help on Crystal System: Crystal System: Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.85(1), 2.59(0.8), 3.16(0.25),
Click Here for Large Scacchite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
 Help on Above


Wyckoff R W G , Crystal Structures , 1 (1963) p.239-444, Second edition. Interscience Publishers, New York, New York, Note: cadmium chloride structure

 

Physical Properties of Scacchite

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Colorless, Rose red, Brown, Brownish red.
Help on Density: Density: 2.977
Help on Diaphaneity: Diaphaneity: Transparent
Help on Streak: Streak: white
 

Optical Properties of Scacchite

Help on Optical Data: Optical Data: Uniaxial (-), e=1.622, w=1.708, bire=0.0860.
 

Calculated Properties of Scacchite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.87 gm/cc
note: Specific Gravity of Scacchite =3.06 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0
Boson Index = 1
Help on Photoelectric: Photoelectric: PEScacchite = 15.29 barns/electron
U=PEScacchite x rElectron Density= 43.88 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Scacchite is Not Radioactive
 

Scacchite Classification
Help on Dana Class: Dana Class: 09.02.03.02 (09)Anhydrous and Hydrated Halides
  (09.02)where A (X)2
  (09.02.03)Dana Group
 
09.02.03.01 Lawrencite (Fe,Ni)Cl2 R 3m 3 2/m
 
09.02.03.02 Scacchite MnCl2 R 3m 3 2/m
 
09.02.03.03 Chloromagnesite* MgCl2 R 3m 3 2/m
Help on Strunz Class: Strunz Class: 03.AB.20 03 - HALIDES
  03.A - Simple Halides, Without H2O
  03.AB -M:X = 1:2
 
03.AB.20 Chloromagnesite* MgCl2 R 3m 3 2/m
 
03.AB.20 Lawrencite (Fe,Ni)Cl2 R 3m 3 2/m
 
03.AB.20 Scacchite MnCl2 R 3m 3 2/m
 

Other Scacchite Information
Help on References: References: NAME( AntBidBlaNic3) 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 Scacchite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Scacchite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Scacchite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Scacchite Mineral Data :

Ask about Scacchite 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 Scacchite Specimen Label here :

Scacchite

MnCl2
Dana No: 09.02.03.02 Strunz No: 03.AB.20
Locality:

 

Notes: