Hulsite Mineral Data + 
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Unparalled diversity of specimens from different locations
- 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
- 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
General Hulsite Information |
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 Chemical Formula: |
(Fe++,Mg)2(Fe+++,Sn)O2(BO3) | ||
| Composition: |
Molecular Weight = 233.09 gm | ||
| Magnesium 10.43 % Mg 17.29 % MgO | |||
| Iron 45.52 % Fe 30.82 % FeO / 30.83 % Fe2O3 | |||
| Tin 5.09 % Sn 6.47 % SnO2 | |||
| Boron 4.64 % B 14.93 % B2O3 | |||
| Oxygen 34.32 % O | |||
| ______ ______ | |||
| 100.00 % 100.34 % = TOTAL OXIDE | |||
| Empirical Formula: |
Fe2+MgFe3+0.9Sn0.1O2(BO3) | ||
| Environment: |
Metamorphosed limestone at a granite contact. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1908 | ||
| Locality: |
Brooks mountain, Seward peninsula, Alaska. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Alfred Hulse Brooks (1871-1924), U. S. Geologist. | ||
| Synonym: |
ICSD 12133 | ||
| PDF 17-511 | |||
Hulsite Image | |||
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Images:
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Hulsite Crystallography |
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| Axial Ratios: |
a:b:c =3.4477:1:1.7508 | ||
| Cell Dimensions: |
a = 10.695, b = 3.102, c = 5.431, Z = 2; beta = 94.21° V = 179.69 Den(Calc)= 4.31 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.664(1), 2.585(0.7), 5.35(0.7), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Hulsite |
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| Cleavage: |
[110] Good | ||
| Color: |
Black. | ||
| Density: |
4.3 | ||
| Diaphaniety: |
Opaque | ||
| Habit: |
Crystalline - Fine - Occurs as well-formed fine sized crystals. | ||
| Habit: |
Tabular - Form dimensions are thin in one direction. | ||
| Hardness: |
3 - Calcite | ||
| Luminescence: |
Non-fluorescent. | ||
| Luster: |
Sub Metallic | ||
| Streak: |
black | ||
Calculated Properties of Hulsite |
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| Electron Density: |
relectron=4.12 gm/cc |
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| Fermion Index |
Fermion Index = 0.03793 Boson Index = 0.96207 |
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| Photoelectric: |
PEHulsite = 28.80 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hulsite is Not Radioactive |
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Hulsite Classification |
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| Dana Class: |
24.2.3.1 (24)Borates - Anhydrous | ||
| (24.2)where (A)2 BO2 [XO3] | |||
| (24.2.3)Dana Group | |||
| Strunz Class: |
V/G.03-40 V - Nitrates, Carbonates and Borates | ||
| V/G - "Insel" borates [BO3]3- "inseln" | |||
| V/G.03 - Warwickite - Hulsite series | |||
Other Hulsite Information |
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| References: |
NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Hulsite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 - HyperPhysics 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - WWW-MINCRYST 15 -École des Mines de Paris Search for Hulsite using: Visit our Advertisers for Hulsite : Translate Hulsite Mineral Data : Ask about Hulsite here : Print or Cut-and-Paste your Hulsite Specimen Label here :
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