Hingganite-(Ce) Mineral Data +

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General Hingganite-(Ce) Information
Chemical Formula:	Ce2Be2(SiO4)2(OH)2
Composition:	Molecular Weight = 518.75 gm
	Cerium     40.51 %  Ce   47.45 % Ce2O3
	Yttrium     8.57 %  Y    10.88 % Y2O3
	Beryllium   3.47 %  Be    9.64 % BeO
	Iron        5.38 %  Fe    6.92 % FeO
	Silicon    10.83 %  Si   23.16 % SiO2
	Hydrogen    0.39 %  H     3.47 % H2O
	Oxygen     30.84 %  O
	______        ______
	100.00 %      101.54 % = TOTAL OXIDE
Empirical Formula:	Ce1.5Y0.5Fe2+0.5Be2Si2O8(OH)2
Environment:	Occurs in pegmatite.
IMA Status:	Approved IMA 1987
Locality:	Tahara, Hirukawa-mura, Ena-gun, Gifu Prefecture, Japan Link to MinDat.org Location Data.
Name Origin:	Named for it's relationship to hingganite-(Y).
Synonym:	ICSD 84023
	IMA2004-004
	PDF 40-1452
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Hingganite-(Ce) Crystallography
Axial Ratios:	a:b:c =1.2974:1:0.6227
Cell Dimensions:	a = 9.8973, b = 7.6282, c = 4.7505, Z = 2; beta = 90.416° V = 358.65 Den(Calc)= 4.80
Crystal System:	Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
X Ray Diffraction:	By Intensity(I/Io): 2.85(1), 3.13(0.86), 2.56(0.46),6.06(0.42), 3.74(0.37), 3.44(0.34), 2.21(0.33), 1.976(0.3),
Physical Properties of Hingganite-(Ce)
Color:	Reddish brown.
Density:	4.66
Diaphaniety:	Transparent to Translucent
Hardness:	6-7 - Orthoclase-Quartz
Luster:	Vitreous (Glassy)
Streak:	white
Optical Properties of Hingganite-(Ce)
Gladstone-Dale:	CI meas= 0.12 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.146 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1563,KPDmeas= 0.1609,KC= 0.183
Optical Data:	Biaxial (?), b=1.75
Calculated Properties of Hingganite-(Ce)
Electron Density:	relectron=4.27 gm/cc note: rHingganite-(Ce) =4.66 gm/cc.
Fermion Index	Fermion Index = 0.04109 Boson Index = 0.95891
Photoelectric:	PEHingganite-(Ce) = 217.45 barns/electron U=PEHingganite-(Ce) x relectron= 927.85 barns/cc.
Radioactivity:	GRapi = 39,570.81 (Gamma Ray American Petroleum Institute Units) Hingganite-(Ce) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram. Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 768.66 ±192.17 grams of pure Hingganite-(Ce) . Estimated Radioactivity from Hingganite-(Ce) - weak Specimen Size Weight/Volume (Sphere) * Calculated Activity Bequerols (Bq) Calculated Activity Curies (Ci) Estimated Activity GR(api) Estimated Exposure (mRem**)/hr If Held in Hand For One Hour 1000 gm / 7.43 cm 907,533 2.45E-05 39,570.81 13.01 100 gm / 3.45 cm 90,753 2.45E-06 3,957.08 1.30 10 gm / 1.60 cm 9,075 2.45E-07 395.71 0.13 1 gm / 7.43 mm 908 2.45E-08 39.57 0.01 0.1 gm / 3.45 mm 91 2.45E-09 3.96 0.00 0.01 gm / 1.60 mm 9 2.45E-10 0.40 0.00 0.001 gm / 0.74 mm 1 2.45E-11 0.04 0.00 Weight of pure Hingganite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.66 gm/cc.* Goverment Estimate of Average Annual Exposure ( 360 mRem) ** Note: 10 microsieverts/hr = 1 mRem/hr ** Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes) Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem Estimated Thorium Activity ( 2.03 % Th) From Sum REE Elements (40.51 % REE)
Hingganite-(Ce) Classification
Dana Class:	54.2.1a.2 (54)Nesosilicate Borosilicates and Some Beryllosilicates
	(54.2)with B in [4] coordination
	(54.2.1a)Datolite group (Datolite series)
	54.2.1a.1 Datolite CaBSiO4(OH) P 21/c 2/m
	54.2.1a.2 Hingganite-(Ce) Ce2Be2(SiO4)2(OH)2 P 21/a 2/m
	54.2.1a.3 Hingganite-(Y) Y2([])Be2Si2O8(OH)2 P 21/a 2/m
	54.2.1a.4 Hingganite-(Yb) (Yb,Y)2([])Be2Si2O8(OH)2 P 21/a 2/m
	54.2.1a.5 Calcybeborosilite-(Y)! (REE,Ca)2[](B,Be)2(SiO4)2(OH,O)2 P 21/a 2/m
Strunz Class:	VIII/B.29-80 VIII - Silicates
	VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, with beryllium and boron
	VIII/B.29 - Datolite/Gadolinite group
	VIII/B.29-10 Datolite CaBSiO4(OH) P 21/c 2/m
	VIII/B.29-20 Bakerite Ca4B4(BO4)(SiO4)3(OH)3·(H2O) P 21/c 2/m
	VIII/B.29-30 Homilite Ca2(Fe,Mg)B2Si2O10 P 21/a 2/m
	VIII/B.29-35 Vistepite Mn4SnB2(SiO4)4(OH)2 P1 1
	VIII/B.29-40 Minasgeraisite-(Y) CaY2Be2Si2O10 P 21/a 2/m
	VIII/B.29-50 Gadolinite-(Y) Y2FeBe2Si2O10 P 21/a 2/m
	VIII/B.29-60 Gadolinite-(Ce) (Ce,La,Nd,Y)2FeBe2Si2O10 P 21/c 2/m
	VIII/B.29-70 Hingganite-(Y) Y2([])Be2Si2O8(OH)2 P 21/a 2/m
	VIII/B.29-80 Hingganite-(Ce) Ce2Be2(SiO4)2(OH)2 P 21/a 2/m
	VIII/B.29-90 Hingganite-(Yb) (Yb,Y)2([])Be2Si2O8(OH)2 P 21/a 2/m
	VIII/B.29-100 Calcybeborosilite-(Y)! (REE,Ca)2[](B,Be)2(SiO4)2(OH,O)2 P 21/a 2/m
Other Hingganite-(Ce) Information
References:	NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.75,p432,1990) OPTIC PROP.(Am.Min.,Vol.75,p432,1990)
See Also:	Links to other databases for Hingganite-(Ce) : 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 -École des Mines de Paris Search for Hingganite-(Ce) using:   Web webmineral.com [ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO] Visit our Advertisers for Hingganite-(Ce) : 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 Hingganite-(Ce) Mineral Data : Ask about Hingganite-(Ce) 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 Hingganite-(Ce) Specimen Label here : Hingganite-(Ce) Ce2Be2(SiO4)2(OH)2 Dana No: 54.2.1a.2 Strunz No: VIII/B.29-80 Locality:   Notes: