Szaibelyite Mineral Data
General Szaibelyite Information
Chemical Formula:
MgBO2(OH)
Composition:
Molecular Weight = 84.44 gm
Magnesium 28.50 % Mg 47.26 % MgO
Iron 0.66 % Fe 0.85 % FeO
Boron 12.80 % B 41.23 % B2 O3
Hydrogen 1.19 % H 10.67 % H2 O
Oxygen 56.85 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Mg0.99 Fe2+ 0.01 BO2 (OH)
Environment:
Found in metamorrphosed limestones and dolomites and salt deposits. Forms a series with sussexite.
IMA Status:
Valid Species (Pre-IMA) 1861
Locality:
Baita Bihor, Romania and Windsor Group evaporates, Kings county, New Brunswick, Canada. Link to MinDat.org Location Data.
Name Origin:
Named for Stephan Szaibely (1777-1855), Hungarian mine surveyor who first collected the mineral.
Name Pronunciation:
Szaibelyite + Pronunciation
Synonym:
Ascharite
Camsellite
Szaibelyite Image
Images:
Images:
Images:
Szaibelyite Crystallography
Axial Ratios:
a:b:c =1.2084:1:0.3009
Cell Dimensions:
a = 12.586, b = 10.415, c = 3.134, Z = 8; beta = 95.923° V = 408.62 Den(Calc)= 2.74
Crystal System:
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21 /a
X Ray Diffraction:
By Intensity(I/Io ): 6.2(1), 2.202(0.8), 2.657(0.75),
Physical Properties of Szaibelyite
Cleavage:
None
Color:
White, Yellow.
Density:
2.65 - 2.7, Average = 2.67
Diaphaneity:
Transparent to Translucent
Fracture:
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Habit:
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Habit:
Fibrous - Crystals made up of fibers.
Habit:
Nodular - Tuberose forms having irregular protuberances over the surface.
Hardness:
3-3.5 - Calcite-Copper Penny
Luminescence:
Fluorescent, Short UV=tan, Long UV=weak yellow-white tan.
Luster:
Vitreous - Dull
Magnetism:
Nonmagnetic
Streak:
white
Optical Properties of Szaibelyite
Gladstone-Dale:
CI meas = -0.057 (Good) - where the CI = (1-KPDmeas /KC ) CI calc = -0.032 (Excellent) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2281,KPDmeas = 0.2336,KC = 0.221 Ncalc = 1.59 - 1.61
Optical Data:
Biaxial (-), a=1.53-1.67, b=1.53-1.73, g=1.55-1.74, bire=0.0200-0.0700, 2V(Calc)=0-42, 2V(Meas)=0-10. Dispersion none.
Pleochroism (x):
none.
Pleochroism (y):
none.
Pleochroism (z):
none.
Calculated Properties of Szaibelyite
Electron Density:
Bulk Density (Electron Density)=2.73 gm/cc note: Specific Gravity of Szaibelyite =2.74 gm/cc.
Fermion Index:
Fermion Index = 0.05 Boson Index = 0.95
Photoelectric:
PESzaibelyite = 1.00 barns/electronU=PESzaibelyite x r Electron Density= 2.72 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Szaibelyite is Not Radioactive
Szaibelyite Classification
Dana Class:
25.02.01.02 (25) Anhydrous Borates Containing Hydroxyl or Halogen
(25.02) Dana Type
(25.02.01) Dana Group
25.02.01.01 Sussexite MnBO2(OH) P 21 /c 2/m
25.02.01.02 Szaibelyite MgBO2(OH) P 21 /a 2/m
Strunz Class:
06.BA.15 06 - BORATES
06.B - Diborates
06.BA -Neso-diborates with double triangles B2(O,OH)5; 2(2D); 2(2D) + OH, etc.
06.BA.15 Sussexite MnBO2(OH) P 21 /c 2/m
06.BA.15 Szaibelyite MgBO2(OH) P 21 /a 2/m
Other Szaibelyite Information
References:
NAME( Dana8) PHYS. PROP.(Collectors Book of Fluorescent Minerals) OPTIC PROP.(Ford32)
See Also:
Links to other databases for Szaibelyite :
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 - HyperPhysics
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - Scandinavian mineral gallery
17 - WWW-MINCRYST
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Print or Cut-and-Paste your Szaibelyite Specimen Label here :
Szaibelyite
MgBO2(OH)
Dana No: 25.02.01.02 Strunz No: 06.BA.15
Locality:
Notes:
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