Synchysite-(Y) Mineral Data +

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General Synchysite-(Y) Information
Chemical Formula:	CaY(CO3)2F
Composition:	Molecular Weight = 268.00 gm
	Calcium   14.95 %  Ca   20.92 % CaO
	Yttrium   33.17 %  Y    42.13 % Y2O3
	Carbon     8.96 %  C    32.84 % CO2
	Oxygen    35.82 %  O
	Fluorine   7.09 %  F     7.09 % F
	-   %  F    -2.98 % -O=F2
	______        ______
	100.00 %      100.00 % = TOTAL OXIDE
Empirical Formula:	CaY(CO3)2F
Environment:	REE-bearing pegmatites.
IMA Status:	Approved IMA 1966
Locality:	Scrub Oaks mine, Dover, Morris County, New Jersey, USA. Link to MinDat.org Location Data.
Name Origin:	Named for "confounding" having been mistaken for parisite and for the Y end-member of the series.
Synonym:	Doverite
Synchysite-(Y) Image
Images:	Synchysite-(Y) Comments: Small thin tabular crystals of synchysite-(Y) in a vug. Location: Cuasso da Monte, Varese province, Lombardy, Italy. Scale: Picture size 3 mm. © Thomas Witzke / Abraxas-Verlag
Synchysite-(Y) Crystallography
Axial Ratios:	a:b:c =1.7297:1:2.6488
Cell Dimensions:	a = 12.039, b = 6.96, c = 18.436, Z = 12; beta = 102.45° V = 1,508.45 Den(Calc)= 3.54
Crystal System:	Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c
X Ray Diffraction:	By Intensity(I/Io): 1.89(1), 1.83(0.9), 2(0.9),
Physical Properties of Synchysite-(Y)
Cleavage:	[0001] Distinct
Color:	Reddish brown.
Density:	3.89 - 4.1, Average = 3.99
Habit:	Massive - Uniformly indistinguishable crystals forming large masses.
Hardness:	6-6.5 - Orthoclase-Pyrite
Luster:	Earthy (Dull)
Streak:	brown
Optical Properties of Synchysite-(Y)
Gladstone-Dale:	CI meas= 0.08 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.038 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1953,KPDmeas= 0.1731,KC= 0.1882
Optical Data:	Biaxial (?), a=1.653, g=1.73, bire=0.0770
Calculated Properties of Synchysite-(Y)
Electron Density:	relectron=3.38 gm/cc note: rSynchysite-(Y) =3.54 gm/cc.
Fermion Index	Fermion Index = 0.00135 Boson Index = 0.99865
Photoelectric:	PESynchysite-(Y) = 42.82 barns/electron U=PESynchysite-(Y) x relectron= 144.79 barns/cc.
Radioactivity:	GRapi = 0 (Gamma Ray American Petroleum Institute Units) Synchysite-(Y) is Not Radioactive
Synchysite-(Y) Classification
Dana Class:	16a.1.3.2 (16a)Carbonates - Hydroxyl or Halogen
	(16a.1)in the Bastnasite/Shynchysite/Parasite Groups
	(16a.1.3)Synchysite Subgroup
	16a.1.3.1 Synchysite-(Ce) CaCe(CO3)2F C 2/c 2/m
	16a.1.3.2 Synchysite-(Y) CaY(CO3)2F C 2/c 2/m
	16a.1.3.3 Synchysite-(Nd) CaNd(CO3)2F Unk Ortho
Strunz Class:	V/C.07-100 V - Nitrates, Carbonates and Borates
	V/C - Waterfree carbonates with unfamiliar anions
	V/C.07 - Bastnäsite-(Y) - Mineevite-(Y) series
	V/C.07-10 Bastnasite-(Y) Y(CO3)F P 62c 6 m2
	V/C.07-20 Bastnasite-(La) La(CO3)F P 62c 6 m2
	V/C.07-30 Bastnasite-(Ce) Ce(CO3)F P 62c 6 m2
	V/C.07-40 Hydroxylbastnasite-(La) La(CO3)(OH) C 2221 2 2 2
	V/C.07-50 Hydroxylbastnasite-(Ce) Ce(CO3)(OH) P 62c 6 m2
	V/C.07-60 Hydroxylbastnasite-(Nd) Nd(CO3)(OH) P 62c 6 m2
	V/C.07-61 Kozoite-(Nd)! (Nd,La,Sm,Pr)(CO3)(OH) Pmcn 2/m 2/m 2/m
	V/C.07-62 Kozoite-(La)! La(CO3)(OH) Pmcn 2/m 2/m 2/m
	V/C.07-64 Horvathite-(Y)! NaY(CO3)F2 Pmcn 2/m 2/m 2/m
	V/C.07-70 Parisite-(Ce) Ca(Ce,La)2(CO3)3F2 R 3 3
	V/C.07-80 Parisite-(Nd) Ca(Nd,Ce,La)2(CO3)3F2 R 3 3
	V/C.07-90 Rontgenite-(Ce) Ca2(Ce,La)3(CO3)5F3 R 3 3
	V/C.07-100 Synchysite-(Y) CaY(CO3)2F C 2/c 2/m
	V/C.07-110 Synchysite-(Ce) CaCe(CO3)2F C 2/c 2/m
	V/C.07-120 Synchysite-(Nd) CaNd(CO3)2F Unk Ortho
	V/C.07-130 Huanghoite-(Ce) BaCe(CO3)2F R 3m 3 2/m
	V/C.07-140 Cebaite-(Ce) Ba3Ce2(CO3)5F2 C 2/m or C 2 Mono
	V/C.07-150 Cebaite-(Nd)! Ba3(Nd,Ce)2(CO3)5F2 Unk Mono
	V/C.07-154 Kukharenkoite-(La)! Ba2(La,Ce)(CO3)3F P 21/m 2/m
	V/C.07-155 Kukharenkoite-(Ce)! Ba2Ce(CO3)3F P 21/m 2/m
	V/C.07-160 Zhonghuacerite-(Ce) Ba2Ce(CO3)3F P 21/m 2/m
	V/C.07-170 Cordylite-(Ce) Ba(Ce,La)2(CO3)3F2 P 63/mmc 6/m 2/m 2/m
	V/C.07-175 Lukechangite-(Ce)! Na3Ce2(CO3)4F P 63/mmc 6/m 2/m 2/m
	V/C.07-190 Mineevite-(Y) Na25Ba(Y,Gd,Dy)2(HCO3)4(CO3)11(SO4)2ClF2 P 63/m 6/m
	V/C.07-200 Reederite-(Y)! Na15Y2(CO3)9(SO3F)Cl P 6 6
	V/C.07-210 Micheelsenite! (Ca,Y)3Al[PO3OH,CO3](CO3)(OH)6·12(H2O) P 63 6
Other Synchysite-(Y) Information
References:	NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
See Also:	Links to other databases for Synchysite-(Y) : 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 Search for Synchysite-(Y) using:   Web webmineral.com [ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO] Visit our Advertisers for Synchysite-(Y) : 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 Synchysite-(Y) Mineral Data : Ask about Synchysite-(Y) 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 Synchysite-(Y) Specimen Label here : Synchysite-(Y) CaY(CO3)2F Dana No: 16a.1.3.2 Strunz No: V/C.07-100 Locality:   Notes: