Biringuccite Mineral Data

General Biringuccite Information

Chemical Formula:

Na2B5O8(OH)•(H2O)

Composition:

Molecular Weight = 263.05 gm

Sodium 17.48 % Na 23.56 % Na₂O

Boron 20.55 % B 66.17 % B₂O₃

Hydrogen 1.15 % H 10.27 % H₂O

Oxygen 60.82 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₂B₅O₈(OH)•(H₂O)

Environment:

Scales on piping in a geothermal field.

IMA Status:

Approved IMA 1961

Locality:

Larderello, Val di Cecina, Tuscany, Italy. Link to MinDat.org Location Data.

Name Origin:

Named for Vannoccio Biringuccio (1480-1538/9), alchemist and metallurgist, author of the Pirotechnia.

Name Pronunciation:

Biringuccite + Pronunciation

Synonym:

ICSD 6168

PDF 35-421

Biringuccite Crystallography

Axial Ratios:

a:b:c =1.7064:1:3.1637

Cell Dimensions:

a = 11.1955, b = 6.5607, c = 20.7566, Z = 8; beta = 93.891° V = 1,521.06 Den(Calc)= 2.30

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 10.32(1), 3.453(0.8), 5.17(0.6),

Physical Properties of Biringuccite

Cleavage:

{001} Good, {100} Good

Color:

Colorless, White.

Density:

2.32

Diaphaneity:

Transparent

Streak:

white

Optical Properties of Biringuccite

Gladstone-Dale:

CI meas= -0.031 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.04 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2307,KPDmeas= 0.2287,KC= 0.222
Ncalc = 1.51

Optical Data:

Biaxial (-), a=1.496, b=1.539, g=1.557, bire=0.0610, 2V(Calc)=64, 2V(Meas)=62.7.

Calculated Properties of Biringuccite

Electron Density:

Bulk Density (Electron Density)=2.29 gm/cc
note: Specific Gravity of Biringuccite =2.32 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_Biringuccite= 0.53 barns/electron
U=PE_Biringuccite x rElectron Density= 1.21 barns/cc.

Radioactivity:

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

Biringuccite Classification

Dana Class:

26.05.07.01 (26)Hydrated Borates Containing Hydroxyl or Halogen

(26.05)Dana Type

(26.05.07)Dana Group

26.05.07.01 Biringuccite Na2B5O8(OH)•(H2O) P 2₁/c 2/m

Strunz Class:

06.EC.05 06 - BORATES

06.E - Pentaborates

06.EC -Phyllo-pentaborates

06.EC.05 Biringuccite Na2B5O8(OH)•(H2O) P 2₁/c 2/m

06.EC.05 Nasinite Na2B5O8(OH)•2(H2O) P na2₁ mm2

Other Biringuccite Information

References:

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

See Also:

Links to other databases for Biringuccite :
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 Biringuccite Specimen Label here :

Biringuccite

Na2B5O8(OH)•(H2O)
Dana No: 26.05.07.01 Strunz No: 06.EC.05
Locality:

Notes:

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