Maricopaite Mineral Data + Say MARICOPAITE

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General Maricopaite Information

Help on Chemical  Formula: Chemical Formula: Pb7Ca2(Si,Al)48O100·32(H2O)
Help on Composition: Composition: Molecular Weight = 5,088.14 gm
   Calcium    1.73 %  Ca    2.42 % CaO
   Aluminum   6.15 %  Al   11.62 % Al2O3
   Silicon   20.09 %  Si   42.98 % SiO2
   Hydrogen   1.26 %  H    11.26 % H2O
   Lead      29.32 %  Pb   31.58 % PbO
   Oxygen    41.44 %  O
            ______        ______ 
            100.00 %       99.87 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb7.2Ca2.2Al11.6Si36.4O100·31.8(H2O)
Help on Environment: Environment: In a hydrothermal Pb-Cu ore vein, coating and filling fractures in quartz.
Help on IMA Status: IMA Status: Approved IMA 1988
Help on Locality: Locality: Moon Anchor mine, near Tonopah, Maricopa County, Arizona, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: ICSD 75278
  PDF 46-1321
 

Maricopaite Image

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Maricopaite

Comments: Opaque white prismatic maricopaite microcrystals and yellow crystalline mimetite.
Location: Moon Anchor Mine, near Tonopah, Maricopa County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Maricopaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9863:1:0.3826
Help on Cell Dimensions: Cell Dimensions: a = 19.434, b = 19.702, c = 7.538, Z = 1; V = 2,886.21 Den(Calc)= 2.93
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Cm2m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 13.7(1), 3.216(0.5), 9.86(0.4),
Click Here for Large Maricopaite Structure Window Crystal Structure:

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Rouse R C , Peacor D R , American Mineralogist , 79 (1994) p.175-184, Maricopaite, an unusual lead calcium zeolite with an interrupted mordenite-like, framework and intrachannel Pb4 tetrahedral clusters

 

Physical Properties of Maricopaite

Help on Cleavage: Cleavage: [010] Imperfect
Help on Color: Color: White.
Help on Density: Density: 2.94
Help on Diaphaniety: Diaphaniety: Translucent
Help on Fracture: Fracture: Friable - The crumbly disintegration of earthy materials or highly fractured minerals.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 1-1.5 - Talc or a little harder
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: white
 

Optical Properties of Maricopaite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.006 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1976,KPDmeas= 0.1969,KC= 0.1988
Help on Optical Data: Optical Data: Biaxial (-), a=1.563, b=1.582, g=1.592, bire=0.0290, 2V(Calc)=70, 2V(Meas)=70. Dispersion r > v strong.
 

Calculated Properties of Maricopaite

Help on Electron Density: Electron Density:

relectron=2.78 gm/cc
note: rMaricopaite =2.93 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.0744
Boson Index = 0.9256
Help on Photoelectric: Photoelectric:

PEMaricopaite = 475.84 barns/electron
U=PEMaricopaite x relectron=1,322.29 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Maricopaite is Not Radioactive

 

Maricopaite Classification

Help on  Dana Class: Dana Class: 77.1.6.3 (77)Tectosilicate Zeolite group
  (77.1)true zeolites
  (77.1.6)Mordenite and related species
 
77.1.6.1 Mordenite (Ca,Na2,K2)Al2Si10O24·7(H2O) C mc21 mm2
 
77.1.6.2 Epistilbite CaAl2Si6O16·5(H2O) C1 1
 
77.1.6.3 Maricopaite Pb7Ca2(Si,Al)48O100·32(H2O) Cm2m 2/m 2/m 2/m
 
77.1.6.4 Dachiardite-Ca (Ca,Na2,K2)5Al10Si38O96·25(H2O) C 2/m 2/m
 
77.1.6.5 Dachiardite-Na (Na2,Ca,K2)4Al4Si20O48·13(H2O) C 2/m 2/m
 
77.1.6.6 Ferrierite-Mg (Mg,Na,K)2Mg(Si,Al)18O36·9(H2O) Pnnm 2/m 2/m 2/m
 
77.1.6.6a Ferrierite-K! (K,Na)2Mg(Si,Al)18O36·9(H2O) Pnnm 2/m 2/m 2/m
 
77.1.6.6b Ferrierite-Na! (Na,K)2Mg(Si,Al)18O36·9(H2O) P 21/n 2/m 2/m 2/m
 
77.1.6.7 Boggsite NaCa2(Al5Si19O48)·17(H2O) I mma 2/m 2/m 2/m
 
77.1.6.8 Gottardiite! Na3Mg3Ca5Al19Si117O272·93(H2O) C mca 2/m 2/m 2/m
 
77.1.6.9 Terranovaite! (Na,Ca)8(Si68Al12)O160-29(H2O) C mcm 2/m 2/m 2/m
 
77.1.6.10 Mutinaite! Na3Ca4Si85Al11O192·60(H2O) P nma 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: VIII/H.35-20 VIII - Silicates
  VIII/H - Phyllosilicates (layered) Mica minerals with other simple layers, [Si6O15]6- and others
  VIII/H.35 - Jagoite - Maricopaite series
 
VIII/H.35-10 Jagoite (Pb,Na,Ca)3(Fe,Mg)Si3O10(Cl,OH) P 62c 6 m2
 
VIII/H.35-15 Hyttsjoite! Pb18Ba2Ca5Mn2Fe2Si30O90Cl·6(H2O) R 3 3
 
VIII/H.35-20 Maricopaite Pb7Ca2(Si,Al)48O100·32(H2O) Cm2m 2/m 2/m 2/m
 

Other Maricopaite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.74,p947,1989) OPTIC PROP.(Am.Min.,Vol.74,p947,1989)
Help on See Also: See Also: Links to other databases for Maricopaite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Maricopaite

Pb7Ca2(Si,Al)48O100·32(H2O)
Dana No: 77.1.6.3 Strunz No: VIII/H.35-20
Locality:

 

Notes:

 

 
   
 
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