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Barberiite Mineral Data
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General Barberiite Information
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 Chemical Formula: |
(NH4)BF4 |
| Composition: |
Molecular Weight = 104.84 gm |
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Boron 10.31 % B 33.20 % B2O3 |
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Hydrogen 3.85 % H - % Calc as (NH4)2O |
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Nitrogen 13.36 % N 24.84 % (NH4)2O |
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Fluorine 72.48 % F 72.48 % F |
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- %
F -30.52 % -O=F2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
(NH4)BF4 |
| Environment: |
Found in a fumarole at <= 600 deg. C. |
| IMA Status: |
Approved IMA 1994 |
| Locality: |
Fossa crater on Vulcano, Aeolian Islands, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Franco Barberi, Italian volcanologist, University of Pisa, Italy. |
| Name Pronunciation: |
Barberiite + Pronunciation  |
| Synonym: |
ICSD 9918 |
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PDF 47-1762 |
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Barberiite Image |
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Images:
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Barberiite Crystallography
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| Axial Ratios: |
a:b:c =1.5973:1:1.281 |
| Cell Dimensions: |
a = 9.0615, b = 5.6727, c = 7.2672, Z = 4; V = 373.56 Den(Calc)= 1.86 |
| Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma |
| X Ray Diffraction: |
By Intensity(I/Io): 3.183(1), 3.54(0.9), 2.8982(0.8), |
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Physical Properties of Barberiite
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| Cleavage: |
{100} Perfect, {010} Good, {001} Good |
| Color: |
Colorless. |
| Density: |
1.89 |
| Diaphaneity: |
Transparent to Translucent |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
| Hardness: |
1 - Talc |
| Luster: |
Vitreous (Glassy) |
| Streak: |
white |
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Optical Properties of Barberiite
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| Optical Data: |
Biaxial (+/-), b=1.308, 2V(Meas)=90. Dispersion Calculated β index. |
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Calculated Properties of Barberiite
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| Electron Density: |
Bulk Density (Electron Density)=1.85 gm/cc
note: Specific Gravity of Barberiite =1.86 gm/cc.
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| Fermion Index: |
Fermion Index = 0.15
Boson Index = 0.85 |
| Photoelectric: |
PEBarberiite = 0.52 barns/electron
U=PEBarberiite x rElectron Density= 0.95 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Barberiite is Not Radioactive |
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Barberiite Classification
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| Dana Class: |
11.02.04.01 (11)Halide Complexes; Alumino-fluorides |
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(11.02)where (A)m B (X)4 |
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(11.02.04)Dana Group |
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11.02.04.01 Barberiite (NH4)BF4 P nma 2/m 2/m 2/m |
| Strunz Class: |
03.CA.10 03 - HALIDES |
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03.C - Complex Halides |
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03.CA -Borofluorides |
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03.CA.10 Avogadrite (K,Cs)BF4 P nma 2/m 2/m 2/m |
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03.CA.10 Barberiite (NH4)BF4 P nma 2/m 2/m 2/m |
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Other Barberiite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.79,p381-384,1994) OPTIC PROP.(Am.Min.,Vol.79,p381-384,1994) |
| See Also: |
Links to other databases for Barberiite :
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 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Barberiite Specimen Label here :
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Barberiite
(NH4)BF4
Dana No: 11.02.04.01 Strunz No: 03.CA.10
Locality:
Notes:
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