Hambergite Mineral Data (original) (raw)

General Hambergite Information

Chemical Formula:

Be2BO3(OH)

Composition:

Molecular Weight = 93.84 gm

Beryllium 19.21 % Be 53.31 % BeO

Boron 11.52 % B 37.09 % B2O3

Hydrogen 1.07 % H 9.60 % H2O

Oxygen 68.20 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Be2(BO3)(OH)

Environment:

Accessory mineral in granite pegmatites.

IMA Status:

Valid Species (Pre-IMA) 1890

Locality:

Helgeroa, Langesundsfjord, Norway. Link to MinDat.org Location Data.

Name Origin:

Named for Axel Hamberg (1863-1933), Swedish mineralogist and geographer.

Name Pronunciation:

Hambergite + Pronunciation

Synonym:

ICSD 81591

PDF 17-475

Hambergite Image

Images:

Hambergite Crystallography

Axial Ratios:

a:b:c =0.798:1:0.3622

Cell Dimensions:

a = 9.76, b = 12.23, c = 4.43, Z = 8; V = 528.79 Den(Calc)= 2.36

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bca

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

By Intensity(I/Io): 3.82(1), 3.13(0.9), 4.53(0.8),

Forms:

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| | Forms:( 0 1 0) ( 0 2 1) ( 1 1 0) ( 1 0 0) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Crystal Structure:

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| | Burns P C , Novak M , Hawthorne F C , The Canadian Mineralogist , 33 (1995) p.1205-1213, Fluorine-hydroxyl variation in hambergite: A crystal-structure study, Note: sample HM1, Locality: Himalaya mine, California, USA View Additional jPOWD Structure files for Hambergite [1] [2] [3] [4] | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Hambergite

Cleavage:

{010} Perfect, {100} Good

Color:

Colorless, Gray white, Yellowish white, White.

Density:

2.372

Diaphaneity:

Transparent to Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

7.5 - Garnet

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Dull

Streak:

white

Optical Properties of Hambergite

Gladstone-Dale:

CI meas= -0.035 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.04 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.25,KPDmeas= 0.2487,KC= 0.2403
Ncalc = 1.57

Optical Data:

Biaxial (+), a=1.55, b=1.59, g=1.63, bire=0.0800

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

Calculated Properties of Hambergite

Electron Density:

Bulk Density (Electron Density)=2.33 gm/cc
note: Specific Gravity of Hambergite =2.37 gm/cc.

Fermion Index:

Fermion Index = 0.21
Boson Index = 0.79

Photoelectric:

PEHambergite = 0.33 barns/electron
U=PEHambergite x rElectron Density= 0.76 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hambergite is Not Radioactive

Hambergite Classification

Dana Class:

25.01.01.01 (25)Anhydrous Borates Containing Hydroxyl or Halogen

(25.01)Dana Type

(25.01.01)Dana Group

25.01.01.01 Hambergite Be2BO3(OH) P bca 2/m 2/m 2/m

Strunz Class:

06.AB.05 06 - BORATES

06.A - Monoborates

06.AB -BO3, with additional anions; 1(D) + OH, etc.

06.AB.05 Hambergite Be2BO3(OH) P bca 2/m 2/m 2/m

Other Hambergite Information

References:

NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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Print or Cut-and-Paste your Hambergite Specimen Label here :

Hambergite

Be2BO3(OH)
Dana No: 25.01.01.01 Strunz No: 06.AB.05
Locality:

Notes: