General Mottanaite-(Ce) Information![]() Ca4(Ce,Ca)2AlBe2[Si4B4O22]O2 |
![]() Molecular Weight = 1,007.13 gm |
|
Calcium 18.31 % Ca 25.61 % CaO |
|
Cerium 20.87 % Ce 24.44 % Ce2O3 |
|
Thorium 2.30 % Th 2.62 % ThO2 |
|
Titanium 0.48 % Ti 0.79 % TiO2 |
|
Beryllium 0.72 % Be 1.99 % BeO |
|
Aluminum 1.34 % Al 2.53 % Al2O3 |
|
Iron 2.22 % Fe 3.17 % Fe2O3 |
|
Silicon 11.15 % Si 23.86 % SiO2 |
|
Boron 4.29 % B 13.83 % B2O3 |
|
Hydrogen 0.05 % H 0.45 % H2O |
|
Oxygen 37.33 % O |
|
Fluorine 0.94 % F 0.94 % F |
|
- %
F -0.40 % -O=F2 |
|
______ ______ |
|
100.00 % 99.84 % = TOTAL OXIDE |
![]() Ca4Ce1.5Th0.1Ca0.6Al0.5Fe3+0.4Ti0.1Be0.8(Si4B4O22)O(OH)0.5F0.5 |
![]() Miarolitic cavities in alkali-syenitic ejecta enclosed in pyroclastic formations of the Roma Comagmatic Province. (hellandite group; structure) |
![]() Approved IMA 2001 (Dana # Added) |
![]() Sabatini volcanic complex, Latium, Italy. Link to MinDat.org Location Data. |
![]() Named for Annibale Mottana, Professor of Mineralogy at the University of Roma Tre (Italy). |
![]() IMA2001-020 |
| | Mottanaite-(Ce) Image
|
![]()
|
Mottanaite-(Ce) Crystallography![]() a:b:c =4.0101:1:2.1592 |
![]() a = 19.032, b = 4.746, c = 10.248, Z = 2; beta = 110.97° V = 864.35 Den(Calc)= 3.87 |
![]() Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/a |
![]() By Intensity(I/Io): 2.854(1)(411), 2.646(0.86)(413), 2.916(0.86)(212),
3.085(0.85)(412), 2.635(0.84)(611), 2.647(0.84)(013), 3.243(0.8)(410), 3.452(0.67)(2 |
| Physical Properties of Mottanaite-(Ce)![]() None |
![]() Pale brown. |
![]() 3.61 |
![]() Transparent |
![]() Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. |
![]() Anhedral Grains - Granular minerals without the expression of crystal shapes |
![]() Tabular - Form dimensions are thin in one direction. |
![]() Vitreous (Glassy) |
| Optical Properties of Mottanaite-(Ce)![]() CI meas= 0.028 (Excellent) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.093 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1793,KPDmeas= 0.1922,KC= 0.1978 Ncalc = 1.71 - 1.77 ![]() Biaxial (-), a=1.68, b=1.694, g=1.708, bire=0.0280 |
| Calculated Properties of Mottanaite-(Ce)![]() Bulk Density (Electron Density)=3.44 gm/cc |
note: Specific Gravity of Mottanaite-(Ce) =3.61 gm/cc. ![]() Fermion Index = 0.02 |
Boson Index = 0.98 ![]() PEMottanaite-(Ce) = 155.80 barns/electron |
U=PEMottanaite-(Ce) x relectron= 535.32 barns/cc. ![]() |
GRapi = 46,782.29 (Gamma Ray American Petroleum Institute Units)
Mottanaite-(Ce) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram. Estimated Maximum U.S. Postal Shipping Size
(10 mRem/hr limit, Unshielded 10 cm box)
650.17 ±162.54 grams of pure Mottanaite-(Ce) .
Weight of pure Mottanaite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.61 gm/cc.* | Mottanaite-(Ce) Classification![]() 54.02.02.05 (54)Nesosilicate Borosilicates and Some Beryllosilicates |
|
(54.02)with B in [4] coordination |
|
(54.02.02)Hellandite group |
|
|
|
|
|
|
|
![]() 09.DK.20 09 - SILICATES (Germanates) |
|
09.D - Inosilicates* Structural terminology according to Liebau (1985) |
|
09.DK -Inosilicates with 5-periodic single chains |
|
|
|
|
|
|
| Other Mottanaite-(Ce) Information![]() NAME( AmMin, Vol 87, p 739) PHYS. PROP.(AmMin, Vol 87, p 739) OPTIC PROP.(AmMin, Vol 87, p 739) |
![]() Links to other databases for Mottanaite-(Ce) : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Mottanaite-(Ce) using: Visit our Advertisers for Mottanaite-(Ce) : A Bijoux Google Search for Mottanaite-(Ce)Adam's Minerals Google Search for Mottanaite-(Ce) Cape Minerals Google Search for Mottanaite-(Ce) Dakota Matrix Minerals Google Search for Mottanaite-(Ce) Excalibur Mineral Corp. Google Search for Mottanaite-(Ce) Exceptional Minerals Google Search for Mottanaite-(Ce) John Betts Fine Minerals Search for Mottanaite-(Ce) McDougall Minerals Google Search for Mottanaite-(Ce) Mineral News Website Link Rock and Mineral Shows Google Search for Mottanaite-(Ce) Weinrich Minerals, Inc. Google Search for Mottanaite-(Ce) Ask about Mottanaite-(Ce) here : Print or Cut-and-Paste your Mottanaite-(Ce) Specimen Label here :
| |
|
| |