Magnesiohulsite Mineral Data + Say MAGNESIOHULSITE

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General Magnesiohulsite Information

Help on Chemical  Formula: Chemical Formula: (Mg,Fe++)2(Mg,Fe+++,Sn++++)O2(BO3)
Help on Composition: Composition: Molecular Weight = 188.93 gm
   Magnesium  30.87 %  Mg   51.20 % MgO
   Iron       14.78 %  Fe    9.51 % FeO / 10.57 % Fe2O3
   Tin         6.28 %  Sn    7.98 % SnO2
   Boron       5.72 %  B    18.42 % B2O3
   Oxygen     42.34 %  O
             ______        ______ 
             100.00 %       97.67 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg2.4Fe2+0.25Fe3+0.25Sn0.1O2(BO3)
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition and for Alfred Hulse Brooks (1871-1924), U. S. Geologist.
 

Magnesiohulsite Image

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Magnesiohulsite

Comments: Green fibrous massive magnesiohulsite.
Location: Itenyurgin, Chukot Peninsula, Magadan District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Magnesiohulsite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =3.4967:1:1.781
Help on Cell Dimensions: Cell Dimensions: a = 10.7, b = 3.06, c = 5.45, Z = 2; beta = 94.6° V = 177.87 Den(Calc)= 3.53
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/m
 

Physical Properties of Magnesiohulsite

Help on Cleavage: Cleavage: None
Help on Color: Color: Black.
Help on Density: Density: 4.18
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 5.5-6.5 - Knife Blade-Pyrite
Help on Luster: Luster: Sub Metallic
Help on Streak: Streak: dark brown
 

Optical Properties of Magnesiohulsite

Help on Optical Data: Optical Data: Biaxial (?), a=1.88, g=1.95, bire=0.0700
Help on Pleochroism (x): Pleochroism (x): dark green.
Help on Pleochroism (z): Pleochroism (z): dark brown.
 

Calculated Properties of Magnesiohulsite

Help on Electron Density: Electron Density:

relectron=3.43 gm/cc
note: rMagnesiohulsite =3.53 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.05603
Boson Index = 0.94397
Help on Photoelectric: Photoelectric:

PEMagnesiohulsite = 22.99 barns/electron
U=PEMagnesiohulsite x relectron= 78.87 barns/cc.

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

Magnesiohulsite is Not Radioactive

 

Magnesiohulsite Classification

Help on  Dana Class: Dana Class: 24.2.3.2 (24)Borates - Anhydrous
  (24.2)where (A)2 BO2 [XO3]
  (24.2.3)Dana Group
 
24.2.3.1 Hulsite (Fe,Mg)2(Fe,Sn)O2(BO3) P 2/m 2/m
 
24.2.3.2 Magnesiohulsite (Mg,Fe)2(Mg,Fe,Sn)O2(BO3) P 2/m 2/m
 
24.2.3.3 Alumino-magnesiohulsite! Mg2(Al,Mg,Sn)(BO3)O2 P 2/m 2/m
Help on  Strunz Class: Strunz Class: V/G.03-30 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 Magnesiohulsite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Magnesiohulsite :
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 -École des Mines de Paris

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Magnesiohulsite

(Mg,Fe++)2(Mg,Fe+++,Sn++++)O2(BO3)
Dana No: 24.2.3.2 Strunz No: V/G.03-30
Locality:

 

Notes:

 

 
   
 
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