Biringuccite Mineral Data +

B & L Fine Minerals

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)
IMA Status:	Approved IMA 1961
Locality:	Link to MinDat.org Location Data.
Synonym:	ICSD 6168
	PDF 35-421
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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 - PrismaticH-M Symbol (2/m) Space Group: P 21/c
X Ray Diffraction:	By Intensity(I/Io): 10.32(1), 3.453(0.8), 5.17(0.6),
Crystal Structure: Mouse drag1 - LMB Manipulate Structure drag2 - RMB Resize/Rotate Keyboard S - Stereo Pair on/off H - Help Screen I - Data Info A - Atoms On/Off P - Polyhedra On/Off B - Bonds On/Off Help on Above	Corazza E , Menchetti S , Sabelli C , American Mineralogist , 59 (1974) p.1005-1015, The crystal structure of biringuccite, Na4[B10O16(OH)2].2H2O
Physical Properties of Biringuccite
Cleavage:	[001] Good, [100] Good
Color:	Colorless, White.
Density:	2.32
Diaphaniety:	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
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:	relectron=2.29 gm/cc note: rBiringuccite =2.32 gm/cc.
Fermion Index	Fermion Index = 0.04118 Boson Index = 0.95882
Photoelectric:	PEBiringuccite = 0.53 barns/electron U=PEBiringuccite x relectron= 1.21 barns/cc.
Radioactivity:	GRapi = 0 (Gamma Ray American Petroleum Institute Units) Biringuccite is Not Radioactive
Biringuccite Classification
Dana Class:	26.5.7.1 (26)Hydrated Borates Containing Hydroxyl or Halogen
	(26.5)Dana Type
	(26.5.7)Dana Group
	26.5.7.1 Biringuccite Na2B5O8(OH)·(H2O) P 21/c 2/m
Strunz Class:	V/K.03-20 V - Nitrates, Carbonates and Borates
	V/K - Layered borates with complex groups [Bx(O,OH)y]
	V/K.03 - Nasinite ? - Tuzlaite series
	V/K.03-10 Nasinite Na2B5O8(OH)·2(H2O) P na21 mm2
	V/K.03-20 Biringuccite Na2B5O8(OH)·(H2O) P 21/c 2/m
	V/K.03-30 Tuzlaite NaCaB508(0H)2·3(H2O) P 21/c 2/m
Other Biringuccite Information
References:	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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris Search for Biringuccite using:   Web webmineral.com [ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO] Visit our Advertisers for Biringuccite : AA Mineral Specimens B & L Fine Minerals Crystal Vaults Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals Rockshop.cz T G Fine Minerals Wrights Rock Shop Translate Biringuccite Mineral Data : Ask about Biringuccite here : Ask-A-Mineralogist from the Mineralogical Society of America Mindat.org's Discussion Groups Original Rockhounds Discussion Group Rockhounds Discussion Group on Yahoo Groups Mineral Discussion Forum from Fabre Minerals - also available in Español Print or Cut-and-Paste your Biringuccite Specimen Label here : Biringuccite Na2B5O8(OH)·(H2O) Dana No: 26.5.7.1 Strunz No: V/K.03-20 Locality:   Notes: