Romarchite Mineral Data

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

Advertisment
McDougall Minerals is based near famous Bancroft, Ontario, at the heart of one of the best mineral regions in Canada

General Romarchite Information

Help on Chemical Formula: Chemical Formula: SnO
Help on Composition: Composition: Molecular Weight = 134.71 gm
   Tin     88.12 %  Sn  100.00 % SnO
   Oxygen  11.88 %  O
          ______        ______ 
          100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: SnO
Help on Environment: Environment: Alteration product on pewter (tin) objects and found on veins containing native tin.
Help on IMA Status: IMA Status: Approved IMA 1971
Help on Locality: Locality: Tin cooking utensils submerged since 1830 in the Winnipeg River at Boundary Falls, Manitoba, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the initials of the Royal Ontario Museum (ROM), where the mineral was identified and for ARCHaeology because it was found on tin artifacts.
Help on Name Pronunciation: Name Pronunciation: Romarchite + Pronunciation Say ROMARCHITE
Help on Synonym: Synonym: ICSD 16481
  IMA1969-006
  PDF 6-395
 

Romarchite Image

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

Romarchite

Comments: SEM photograph of romarchite precipitating on quartz sand grains on the surface of a pewter artifact. (Geoarchaeology, 19:538).
Location: Wreck of the Queen Anne’s Revenge (A.D. 1718). Scale: Scale Bar 30 µm.
© Geoarchaeology

Romarchite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.27196
Help on Cell Dimensions: Cell Dimensions: a = 3.802, c = 4.836, Z = 2; V = 69.91 Den(Calc)= 6.40
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.99(1), 2.69(0.4), 1.8(0.3),1.6(0.3), 1.48(0.1), 1.49(0.1), 1.9(0.1), 2.42(0.1),
Click Here for Large Romarchite 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


Pannetier J , Denes G , Acta Crystallographica, Section B , 36 (1980) p.2763-2765, Tin(II) oxide: structure refinement and thermal expansion

 

Physical Properties of Romarchite

Help on Color: Color: Black.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
 

Optical Properties of Romarchite

Help on Optical Data: Optical Data: NCalc= 1.9 - from Gladstone-Dale relationship (KC = 0.14) where Ncalc=Dcalc*KC+1
 

Calculated Properties of Romarchite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.51 gm/cc
note: Specific Gravity of Romarchite =6.40 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.14
Boson Index = 0.86
Help on Photoelectric: Photoelectric: PERomarchite = 281.75 barns/electron
U=PERomarchite x rElectron Density=1,552.78 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Romarchite is Not Radioactive
 

Romarchite Classification
Help on Dana Class: Dana Class: 04.02.05.01 (04)Simple Oxides
  (04.02)with a cation charge of 2+ (A++ O)
  (04.02.05)Dana Group
 
04.02.05.01 Romarchite SnO P 4/nmm 4/m 2/m 2/m
Help on Strunz Class: Strunz Class: 04.AC.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.A - Metal:Oxygen = 2.1 and 1:1
  04.AC -M:O = 1:1 (and up to 1:1.25); with large cations (± smaller ones)
 
04.AC.20 Litharge PbO P 4/nmm 4/m 2/m 2/m
 
04.AC.20 Romarchite SnO P 4/nmm 4/m 2/m 2/m
 

Other Romarchite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Romarchite :
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
15 - WWW-MINCRYST

Search for Romarchite using:

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

Visit our Advertisers for Romarchite :

Dakota Matrix Minerals Google Search for Romarchite
Excalibur Mineral Corp. Google Search for Romarchite
John Betts Fine Minerals Search for Romarchite
McDougall Minerals Google Search for Romarchite
Mineral News Website Link
Mineral of the Month Club Google Search for Romarchite
Rock and Mineral Shows Google Search for Romarchite
Weinrich Minerals, Inc. Google Search for Romarchite

Ask about Romarchite 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 Romarchite Specimen Label here :

Romarchite

SnO
Dana No: 04.02.05.01 Strunz No: 04.AC.20
Locality:

 

Notes: