Boggsite Mineral Data (original) (raw)

General Boggsite Information

Chemical Formula:

NaCa2(Al5Si19O48)•17(H2O)

Composition:

Molecular Weight = 1,845.91 gm

Sodium 1.25 % Na 1.68 % Na2O

Calcium 4.34 % Ca 6.08 % CaO

Aluminum 7.31 % Al 13.81 % Al2O3

Silicon 28.91 % Si 61.84 % SiO2

Hydrogen 1.86 % H 16.59 % H2O

Oxygen 56.34 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaCa2Al5Si19O48•17(H2O)

Environment:

In vesicles in one of a series of porphyritic basalt flows intercalated with pyroclastics and minor sediments.

IMA Status:

Approved IMA 1990

Locality:

Along Goble Creek, near Goble, Columbia Co., Oregon, USA. Link to MinDat.org Location Data.

Name Origin:

After Robert Maxwell Boggs (1918- ), of Seattle, Washington, USA, and his son, Dr. Russell Calvin Boggs (1952- ), of Cheney, Washington, USA, mineral collectors.

Name Pronunciation:

Boggsite

Synonym:

ICSD 69120

IMA1989-009

PDF 42-1379

Boggsite Image

Images:

	Boggsite Comments: Pure white spheroidal boggsite crystal. Location: Neer Road, Goble, Columbia Co., Oregon, USA.Scale: Crystal size 0.5 mm. © Tom Loomis / Dakota Matrix

Boggsite Crystallography

Axial Ratios:

a:b:c =0.8503:1:0.5377

Cell Dimensions:

a = 20.236, b = 23.798, c = 12.798, Z = 4; V = 6,163.21 Den(Calc)= 1.99

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: I mma

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/Io): 3.37(1), 11.3(1), 3.86(0.8),

Crystal Structure:

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| | Pluth J J , Smith J V , American Mineralogist , 75 (1990) p.501-507, Crystal structure of boggsite, a new high-silica zeolite with the first, three-dimensional channel system bounded by both 12- and 10-rings View Additional jPOWD Structure files for Boggsite [1] [2] [3] [4] [5] [6] | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Boggsite

Cleavage:

None

Color:

Colorless, White.

Density:

1.98

Diaphaneity:

Transparent

Hardness:

3.5 - Copper Penny

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Boggsite

Gladstone-Dale:

CI meas= -0.062 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.056 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2425,KPDmeas= 0.2438,KC= 0.2296
Ncalc = 1.45 - 1.46

Optical Data:

Biaxial (-), a=1.48, b=1.481, g=1.487, bire=0.0070, 2V(Calc)=46, 2V(Meas)=25.

Calculated Properties of Boggsite

Electron Density:

Bulk Density (Electron Density)=2.02 gm/cc
note: Specific Gravity of Boggsite =1.99 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PEBoggsite = 1.91 barns/electron
U=PEBoggsite x rElectron Density= 3.85 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Boggsite is Not Radioactive

Boggsite Classification

Dana Class:

77.01.06.07 (77)Tectosilicate Zeolite group

(77.01)true zeolites

(77.01.06)Mordenite and related species

77.01.06.01 Mordenite (Ca,Na2,K2)Al2Si10O24•7(H2O) C mc21 mm2

77.01.06.02 Epistilbite CaAl2Si6O16•5(H2O) C1 1

77.01.06.03 Maricopaite Pb7Ca2(Si,Al)48O100•32(H2O) Cm2m 2/m 2/m 2/m

77.01.06.04 Dachiardite-Ca (Ca,Na2,K2)5Al10Si38O96•25(H2O) C 2/m 2/m

77.01.06.05 Dachiardite-Na (Na2,Ca,K2)4Al4Si20O48•13(H2O) C 2/m 2/m

77.01.06.06 Ferrierite-Mg (Mg,Na,K)2Mg(Si,Al)18O36•9(H2O) Pnnm 2/m 2/m 2/m

77.01.06.06a Ferrierite-K! (K,Na)2Mg(Si,Al)18O36•9(H2O) Pnnm 2/m 2/m 2/m

77.01.06.06b Ferrierite-Na! (Na,K)2Mg(Si,Al)18O36•9(H2O) P 21/n 2/m

77.01.06.07 Boggsite NaCa2(Al5Si19O48)•17(H2O) I mma 2/m 2/m 2/m

77.01.06.08 Gottardiite! Na3Mg3Ca5Al19Si117O272•93(H2O) C mca 2/m 2/m 2/m

77.01.06.09 Terranovaite! (Na,Ca)8(Si68Al12)O160•29(H2O) C mcm 2/m 2/m 2/m

77.01.06.10 Mutinaite! Na3Ca4Si85Al11O192•60(H2O) P nma 2/m 2/m 2/m

77.01.06.12 Direnzoite! NaK6MgCa2(Al13Si47O120)•36H2O Pmmn 2/m 2/m 2/m

Strunz Class:

09.GC.30 09 - SILICATES (Germanates)

09.G - Tektosilicates with Zeolitic H2O

09.GC -Chains of doubly-connected 4-membered rings

09.GC.30 Boggsite NaCa2(Al5Si19O48)•17(H2O) I mma 2/m 2/m 2/m

Other Boggsite Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.75,p1200-1204,1990) OPTIC PROP.(Am.Min.,Vol.75,p1200-1204,1990)

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Print or Cut-and-Paste your Boggsite Specimen Label here :

Boggsite

NaCa2(Al5Si19O48)•17(H2O)
Dana No: 77.01.06.07 Strunz No: 09.GC.30
Locality:

Notes: