Hauyne Mineral Data +

Excalibur Minerals

General Hauyne Information
Chemical Formula:	(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
Composition:	Molecular Weight = 1,032.43 gm
	Sodium     8.91 %  Na   12.01 % Na2O
	Calcium    7.76 %  Ca   10.86 % CaO
	Aluminum  15.68 %  Al   29.63 % Al2O3
	Silicon   16.32 %  Si   34.92 % SiO2
	Sulfur     9.32 %  S
	Chlorine   1.72 %  Cl    1.72 % Cl
	-   %  Cl   -0.39 % -O=Cl2
	Oxygen    40.29 %  O
	______        ______
	100.00 %       96.50 % = TOTAL OXIDE
Empirical Formula:	Na4Ca2Al6Si6O22S2(SO4)Cl0.5
Environment:	Igneous rocks low in silica and rich in alkalis.
IMA Status:	Valid Species (Pre-IMA) 1807
Locality:	Vesuvian lavas, on Mte Somma, Italy. Link to MinDat.org Location Data.
Name Origin:	Named after the French crystallographer, R. J. Hauy (1743-1822).
Synonym:	Hauynite
	ICSD 39952
	PDF 37-473
Hauyne Image
Images:	Hauyne Comments: Grains of deep blue hauyne crystals in matrix. Location: Niedermendig, Eifel, Germany. Scale: Picture size 5 mm. © John Veevaert
Hauyne Crystallography
Cell Dimensions:	a = 8.9, Z = 1; V = 704.97 Den(Calc)= 2.43
Crystal System:	Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: P 43n
X Ray Diffraction:	By Intensity(I/Io): 3.72(1), 2.63(0.5), 6.45(0.3),
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	Hassan I , Grundy H D , The Canadian Mineralogist , 29 (1991) p.123-130, The crystal structure of hauyne at 293 and 153 K, Sample: at T = 153 K, Locality: Valle Biacheela, Sacrafano, Italy View Additional jPOWD Structure files for Hauyne [1]
Physical Properties of Hauyne
Cleavage:	[110] Perfect, [011] Perfect, [101] Perfect
Color:	Blue, Green, Red, Yellow, Gray.
Density:	2.4 - 2.5, Average = 2.45
Diaphaniety:	Subtransparent to translucent
Fracture:	Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Habit:	Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Habit:	Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Habit:	Twinning Common - Crystals are usually twinned.
Hardness:	5-6 - Between Apatite and Orthoclase
Luminescence:	None.
Luster:	Vitreous - Greasy
Streak:	bluish white
Optical Properties of Hauyne
Gladstone-Dale:	CI meas= -0.019 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.027 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2042,KPDmeas= 0.2025,KC= 0.1987
Optical Data:	Isotropic, n=1.4961.
Calculated Properties of Hauyne
Electron Density:	relectron=2.42 gm/cc note: rHauyne =2.45 gm/cc.
Fermion Index	Fermion Index = 0.00861 Boson Index = 0.99139
Photoelectric:	PEHauyne = 2.81 barns/electron U=PEHauyne x relectron= 6.81 barns/cc.
Radioactivity:	GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hauyne is Not Radioactive
Hauyne Classification
Dana Class:	76.2.3.3 (76)Tectosilicate Al-Si Framework
	(76.2)Feldspathoids and related species
	(76.2.3)Sodalite group
	76.2.3.1 Sodalite Na8Al6Si6O24Cl2 P 43n 4 3m
	76.2.3.2 Nosean Na8Al6Si6O24(SO4) P 43m 4 3m
	76.2.3.3 Hauyne (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2 P 43n 4 3m
	76.2.3.4 Lazurite Na3Ca(Al3Si3O12)S P 43n 4 3m
	76.2.3.5 Bicchulite Ca2Al2SiO6(OH)2 I 43m 4 3m
	76.2.3.6 Kamaishilite Ca2Al2SiO6(OH)2 I-lattice Tetra
	76.2.3.7 Tugtupite Na4AlBeSi4O12Cl I 4 4
	76.2.3.8 Tsaregorodtsevite N(CH3)4AlSi5O12 I 222 2 2 2
Strunz Class:	VIII/J.11-30 VIII - Silicates
	VIII/J - Tectosilicates (network) with anions unfamiliar to the tetraheders
	VIII/J.11 - Sodalite group, Tsaregorodtsevite - Wadalite series
	VIII/J.11-05 Tsaregorodtsevite N(CH3)4AlSi5O12 I 222 2 2 2
	VIII/J.11-10 Sodalite Na8Al6Si6O24Cl2 P 43n 4 3m
	VIII/J.11-20 Nosean Na8Al6Si6O24(SO4) P 43m 4 3m
	VIII/J.11-30 Hauyne (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2 P 43n 4 3m
	VIII/J.11-40 Lazurite Na3Ca(Al3Si3O12)S P 43n 4 3m
	VIII/J.11-50 Tugtupite Na4AlBeSi4O12Cl I 4 4
	VIII/J.11-60 Kamaishilite Ca2Al2SiO6(OH)2 I-lattice Tetra
	VIII/J.11-70 Bicchulite Ca2Al2SiO6(OH)2 I 43m 4 3m
	VIII/J.11-80 Wadalite Ca6Al5Si2O16Cl3 I 43d 4 3m
Other Hauyne Information
References:	NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
See Also:	Links to other databases for Hauyne : 1 -Am. Min. Crystal Structure Database 2 - Applied Mineralogy 3 -Athena 4 - CalTech Mineral Spectroscopy 5 - Crocoite.com Mineral Locations 6 - EUROmin Project 7 -Google Images 8 -Google Scholar 9 -Handbook of Mineralogy (MinSocAm) 10 -Handbook of Mineralogy (UofA) 11 -MinDAT 12 -MinMax(Deutsch) 13 -MinMax(English) 14 -Mineralienatlas (Deutsch) 15 -QUT Mineral Atlas 16 - UCLA - Petrography Thin-Sections 17 - WWW-MINCRYST 18 -École des Mines de Paris Search for Hauyne using:   Web webmineral.com [ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO] Visit our Advertisers for Hauyne : 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 Hauyne Mineral Data : Ask about Hauyne 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 Hauyne Specimen Label here : Hauyne (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2 Dana No: 76.2.3.3 Strunz No: VIII/J.11-30 Locality:   Notes: