Roweite Mineral Data

Roweite Mineral Data
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General Roweite Information

Help on Chemical Formula: Chemical Formula: Ca2Mn++2B4O7(OH)6
Help on Composition: Composition: Molecular Weight = 447.31 gm
   Calcium    17.92 %  Ca   25.07 % CaO
   Manganese  24.56 %  Mn   31.72 % MnO
   Boron       9.67 %  B    31.13 % B2O3
   Hydrogen    1.35 %  H    12.08 % H2O
   Oxygen     46.50 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Mn2+2B4O7(OH)6
Help on Environment: Environment: Hydrothermal veins in a metamorphosed stratiform zinc orebody.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1937
Help on Locality: Locality: Franklin, Sussex Co., New Jersey, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for George Rowe (1868-1947), Mine Captain at Franklin, New Jersey, USA, and long-time collector of Franklin minerals.
Help on Name Pronunciation: Name Pronunciation: Roweite Say ROWEITE
Help on Synonym: Synonym: ICSD 6172
  PDF 26-1065
 

Roweite Image

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Roweite

Comments: Pinkish nodular massive roweite.
Location: Solongo, Republic of Buryatia, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Roweite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.678:1:0.6205
Help on Cell Dimensions: Cell Dimensions: a = 9.057, b = 13.357, c = 8.289, Z = 4; V = 1,002.76 Den(Calc)= 2.96
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbam
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.974(1), 2.6(0.72), 2.184(0.49),
Click Here for Large Roweite Structure Window Crystal Structure:

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Moore P B , Araki T , American Mineralogist , 59 (1974) p.60-65, Roweite, Ca2Mn2(OH)4[B4O7(OH)2]: Its atomic arrangement

 

Physical Properties of Roweite

Help on Cleavage: Cleavage: {001} Indistinct, {021} Indistinct, {100} Distinct
Help on Color: Color: Light brown.
Help on Density: Density: 2.935
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light brown
 

Optical Properties of Roweite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.009 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2212,KPDmeas= 0.2231,KC= 0.2231
Ncalc = 1.65 - 1.66
Help on Optical Data: Optical Data: Biaxial (-), a=1.646, b=1.658, g=1.66, bire=0.0140, 2V(Calc)=44, 2V(Meas)=28.
 

Calculated Properties of Roweite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.89 gm/cc
note: Specific Gravity of Roweite =2.94 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PERoweite = 8.54 barns/electron
U=PERoweite x rElectron Density= 24.65 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Roweite is Not Radioactive
 

Roweite Classification
Help on Dana Class: Dana Class: 25.04.01.01 (25)Anhydrous Borates Containing Hydroxyl or Halogen
  (25.04)Dana Type
  (25.04.01)Dana Group
 
25.04.01.01 Roweite Ca2Mn2B4O7(OH)6 Pbam 2/m 2/m 2/m
 
25.04.01.02 Fedorovskite Ca2(Mg,Mn)2B4O7(OH)6 Pbam 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 06.DA.25 06 - BORATES
  06.D - Tetraborates
  06.DA -Neso-tetraborates
 
06.DA.25 Fedorovskite Ca2(Mg,Mn)2B4O7(OH)6 Pbam 2/m 2/m 2/m
 
06.DA.25 Roweite Ca2Mn2B4O7(OH)6 Pbam 2/m 2/m 2/m
 

Other Roweite 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 Roweite :
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

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

Roweite

Ca2Mn++2B4O7(OH)6
Dana No: 25.04.01.01 Strunz No: 06.DA.25
Locality:

 

Notes: