Pinakiolite Mineral Data + Say PINAKIOLITE

General Pinakiolite Information

Help on Chemical  Formula: Chemical Formula: Mg2Mn+++O2(BO3)
Help on Composition: Composition: Molecular Weight = 194.36 gm
   Magnesium  25.01 %  Mg   41.48 % MgO
   Manganese  28.27 %  Mn   40.61 % Mn2O3
   Boron       5.56 %  B    17.91 % B2O3
   Oxygen     41.16 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg2Mn3+O2(BO3)
Help on Environment: Environment: In dolomite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1890
Help on Locality: Locality: Langban, Varmland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for "small tablet", in allusion to the morphology.
Help on Synonym: Synonym: ICSD 33723
  PDF 36-413
 

Pinakiolite Image

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Pinakiolite

Comments: Black submetallic platy pinakiolite crystals in white calcite.
Location: Langban, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Pinakiolite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =3.6456:1:0.8935
Help on Cell Dimensions: Cell Dimensions: a = 21.79, b = 5.977, c = 5.341, Z = 8; beta = 95.63° V = 692.25 Den(Calc)= 3.73
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.51(1), 2.7(0.9), 5.42(0.8),1.99(0.6), 1.54(0.5), 1.5(0.4), 1.62(0.4), 2.16(0.4),
Help on Forms: Forms:

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Forms: [ 0 1 0] [ 3 1 0] [ 0 0 1]

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Moore P B , Araki T , American Mineralogist , 59 (1974) p.985-1004

 

Physical Properties of Pinakiolite

Help on Cleavage: Cleavage: [010] Good
Help on Color: Color: Black.
Help on Density: Density: 3.88
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luster: Luster: Adamantine - Metallic
Help on Streak: Streak: brown gray
 

Optical Properties of Pinakiolite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.272 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.323 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3224,KPDmeas= 0.31,KC= 0.2437
Help on Optical Data: Optical Data: Biaxial (-), a=1.908, b=2.05, g=2.65, bire=0.7420, 2V(Calc)=64, 2V(Meas)=32. Dispersion r < v.
Help on Pleochroism (x): Pleochroism (x): reddish brown.
Help on Pleochroism (y): Pleochroism (y): nearly opaque black.
Help on Pleochroism (z): Pleochroism (z): yellowish red.
 

Calculated Properties of Pinakiolite

Help on Electron Density: Electron Density:

relectron=3.75 gm/cc
note: rPinakiolite =3.88 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.03627
Boson Index = 0.96373
Help on Photoelectric: Photoelectric:

PEPinakiolite = 7.85 barns/electron
U=PEPinakiolite x relectron= 29.47 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Pinakiolite is Not Radioactive

 

Pinakiolite Classification

Help on  Dana Class: Dana Class: 24.2.4.1 (24)Borates - Anhydrous
  (24.2)where (A)2 BO2 [XO3]
  (24.2.4)Dana Group
 
24.2.4.1 Pinakiolite Mg2MnO2(BO3) C 2/m 2/m
Help on  Strunz Class: Strunz Class: V/G.03-20 V - Nitrates, Carbonates and Borates
  V/G - "Insel" borates [BO3]3- "inseln"
  V/G.03 - Warwickite - Hulsite series
 
V/G.03-05 Pertsevite! Mg2(BO3)F P na21 mm2
 
V/G.03-10 Warwickite Mg(Ti,Fe,Al)(BO3)O Pnam 2/m 2/m 2/m
 
V/G.03-15 Yuanfuliite (Mg,Fe)(Fe,Al,Mg,Ti,Fe)(BO3)O Pnam 2/m 2/m 2/m
 
V/G.03-20 Pinakiolite Mg2MnO2(BO3) C 2/m 2/m
 
V/G.03-25 Alumino-magnesiohulsite! Mg2(Al,Mg,Sn)(BO3)O2 P 2/m 2/m
 
V/G.03-30 Magnesiohulsite (Mg,Fe)2(Mg,Fe,Sn)O2(BO3) P 2/m 2/m
 
V/G.03-40 Hulsite (Fe,Mg)2(Fe,Sn)O2(BO3) P 2/m 2/m
 

Other Pinakiolite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Pinakiolite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - Scandinavian mineral gallery 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Pinakiolite

Mg2Mn+++O2(BO3)
Dana No: 24.2.4.1 Strunz No: V/G.03-20
Locality:

 

Notes:

 

 
   
 
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