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 % B₂O₃

Hydrogen 1.19 % H 10.67 % H₂O

Oxygen 56.85 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg_0.99Fe²⁺_0.01BO₂(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:

Szaibelyite Borcarite

Comments: Pale aqua granular borcarite with white fibrous to granular szaibelyite.
Location: Nalednoya, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Szaibelyite Kainite

Comments: pale violet granular kainite intermixed with white ascharite (szaibelyite).
Location: Havesa, Empelde, Hannover, Niedersachsen, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Szaibelyite

Comments: Bright white fibrous szaibelyite coating on serpentinite rock.
Location: Stinson Beach, Marin County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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 - PrismaticH-M Symbol (2/m) Space Group: P 2₁/a

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 6.2(1), 2.202(0.8), 2.657(0.75),

Crystal Structure:

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Takeuchi Y , Kudoh Y , American Mineralogist , 60 (1975) p.273-279, Szaibelyite, Mq2(OH)[B2O4(OH)]: Crystal structure, pseudosymmetry, and, polymorphism

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:

PE_Szaibelyite= 1.00 barns/electron
U=PE_Szaibelyite x rElectron 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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Ask about Szaibelyite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Mineral Discussion Forum from Fabre Minerals - also available in Español

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: