Marsturite Mineral Data +

T G Fine Minerals

General Marsturite Information
Chemical Formula:	NaCaMn3[Si5O14(OH)]
Composition:	Molecular Weight = 609.31 gm
	Sodium      3.77 %  Na    5.09 % Na2O
	Calcium     6.58 %  Ca    9.20 % CaO
	Manganese  27.05 %  Mn   34.93 % MnO
	Silicon    23.05 %  Si   49.31 % SiO2
	Hydrogen    0.17 %  H     1.48 % H2O
	Oxygen     39.39 %  O
	______        ______
	100.00 %      100.00 % = TOTAL OXIDE
Empirical Formula:	NaCaMn2+3Si5O14(OH)
IMA Status:	Approved IMA 1978
Locality:	Franklin, Sussex County, New Jersey, USA. Link to MinDat.org Location Data.
Name Origin:	Named for Marion Stuart of Bellvue, Idaho, who has been a staunch supporter of the preservation of natural history specimens, particularly those of geological interest.
Marsturite Image
Images:	Marsturite Comments: Orange scaly marsturite on matrix. Location: Molinello Mine, Val Graveglia, Genoa, Liguria, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Marsturite Crystallography
Axial Ratios:	a:b:c =0.64:1:0.5635
Cell Dimensions:	a = 7.7, b = 12.03, c = 6.78, Z = 2; alpha = 85.26°, beta = 94.1°, gamma = 111.04° V = 582.67 Den(Calc)= 3.47
Crystal System:	TriclinicSpace Group: P1,P 1
X Ray Diffraction:	By Intensity(I/Io): 2.725(1), 2.916(0.9), 2.999(0.8),
Physical Properties of Marsturite
Cleavage:	[100] Indistinct, [001] Indistinct
Color:	White, Light pink.
Density:	3.46
Diaphaniety:	Transparent to Translucent
Habit:	Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.
Hardness:	6 - Orthoclase
Luster:	Vitreous (Glassy)
Streak:	white
Optical Properties of Marsturite
Gladstone-Dale:	CI meas= 0.022 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.025 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2003,KPDmeas= 0.2009,KC= 0.2054
Optical Data:	Biaxial (+), a=1.686, b=1.691, g=1.708, bire=0.0220, 2V(Calc)=58, 2V(Meas)=60. Dispersion r > v weak.
Calculated Properties of Marsturite
Electron Density:	relectron=3.37 gm/cc note: rMarsturite =3.46 gm/cc.
Fermion Index	Fermion Index = 0.01104 Boson Index = 0.98896
Photoelectric:	PEMarsturite = 8.64 barns/electron U=PEMarsturite x relectron= 29.13 barns/cc.
Radioactivity:	GRapi = 0 (Gamma Ray American Petroleum Institute Units) Marsturite is Not Radioactive
Marsturite Classification
Dana Class:	65.4.1.6 (65)Inosilicate Single-Width Unbranched Chains, W=1
	(65.4)with chains P=5
	(65.4.1)Rhodonite group
	65.4.1.1 Rhodonite (Mn,Fe,Mg,Ca)SiO3 P1 1
	65.4.1.2 Babingtonite Ca2(Fe,Mn)FeSi5O14(OH) P1 1
	65.4.1.3 Manganbabingtonite Ca2(Mn,Fe)FeSi5O14(OH) P1 1
	65.4.1.4 Nambulite (Li,Na)Mn4[Si5O14(OH)] P1 1
	65.4.1.5 Natronambulite (Na,Li)Mn4[Si5O14(OH)] P1 1
	65.4.1.6 Marsturite NaCaMn3[Si5O14(OH)] P1,P 1 Tri
	65.4.1.7 Lithiomarsturite LiCa2Mn2HSi5O15 P1 1
	65.4.1.8 Scandiobabingtonite! Ca2(Fe,Mn)ScSi5O14(OH) P1 1
Strunz Class:	VIII/F.27-80 VIII - Silicates
	VIII/F - Inosilicates (chain and band) Five chains [Si5O15]10-
	VIII/F.27 - Rhodonite - Inesite series
	VIII/F.27-10 Rhodonite (Mn,Fe,Mg,Ca)SiO3 P1 1
	VIII/F.27-20 Babingtonite Ca2(Fe,Mn)FeSi5O14(OH) P1 1
	VIII/F.27-30 Manganbabingtonite Ca2(Mn,Fe)FeSi5O14(OH) P1 1
	VIII/F.27-35 Scandiobabingtonite! Ca2(Fe,Mn)ScSi5O14(OH) P1 1
	VIII/F.27-40 Santaclaraite CaMn4Si5O14(OH)2·(H2O) P1 1
	VIII/F.27-50 Nambulite (Li,Na)Mn4[Si5O14(OH)] P1 1
	VIII/F.27-60 Natronambulite (Na,Li)Mn4[Si5O14(OH)] P1 1
	VIII/F.27-70 Lithiomarsturite LiCa2Mn2HSi5O15 P1 1
	VIII/F.27-80 Marsturite NaCaMn3[Si5O14(OH)] P1,P 1 Tri
	VIII/F.27-90 Inesite Ca2Mn7Si10O28(OH)2·5(H2O) P1 1
Other Marsturite Information
References:	NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
See Also:	Links to other databases for Marsturite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 - Franklin Minerals(Dunn) 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (MinSocAm) 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 -École des Mines de Paris Search for Marsturite using:   Web webmineral.com [ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO] Visit our Advertisers for Marsturite : 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 Marsturite Mineral Data : Ask about Marsturite 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 Marsturite Specimen Label here : Marsturite NaCaMn3[Si5O14(OH)] Dana No: 65.4.1.6 Strunz No: VIII/F.27-80 Locality:   Notes: