[Newest Minerals] [Minerals for Sale] [Educational Articles] [About Us] [Image Gallery] John Betts - Fine Minerals Classic minerals, out-of-print books & magazines, plus informative articles for collectors General Monteregianite-(Y) Information(Na,K)6(Y,Ca)2Si16O38•10(H2O) |
Molecular Weight = 1,574.86 gm |
|
Potassium 4.47 % K 5.38 % K2O |
|
Sodium 6.86 % Na 9.25 % Na2O |
|
Calcium 0.51 % Ca 0.71 % CaO |
|
Yttrium 9.60 % Y 12.19 % Y2O3 |
|
Aluminum 0.34 % Al 0.65 % Al2O3 |
|
Silicon 28.18 % Si 60.28 % SiO2 |
|
Hydrogen 1.28 % H 11.44 % H2O |
|
Oxygen 48.76 % O |
|
______ ______ |
|
100.00 % 99.90 % = TOTAL OXIDE |
K1.8Na4.7Y1.7Ca0.2Si15.8Al0.2O38•10(H2O) |
In miarolitic cavities, metamorphosed inclusions in nepheline syenite. |
Approved IMA 1987 |
Mont Saint-Hilaire, Quebec, Canada. Link to MinDat.org Location Data. |
Named for the Monteregian Hills, a series of intrusions. |
Monteregianite-(Y) + Pronunciation |
ICSD 202257 |
|
IMA1972-026 |
|
PDF 31-1087 |
| | Monteregianite-(Y) Image
|
|
Monteregianite-(Y) Crystallographya:b:c =0.397:1:0.4014 |
a = 9.512, b = 23.956, c = 9.617, Z = 2; beta = 93.85° V = 2,186.47 Den(Calc)= 2.39 |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m |
By Intensity(I/Io): 4.42(1), 7.03(1), 12(1), |
|
Mouse
|
| Physical Properties of Monteregianite-(Y){010} Perfect, {001} Good, {100} Distinct |
Colorless, Greenish, Gray, Gray white, White. |
2.42 |
Transparent to Translucent |
Acicular - Occurs as needle-like crystals. |
Pseudo Orthorhombic - Crystals show an orthorhombic shape. |
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) |
3.5 - Copper Penny |
Fluorescent, Short UV=green. |
Vitreous - Silky |
white |
| Optical Properties of Monteregianite-(Y)CI meas= 0.018 (Superior) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.005 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2148,KPDmeas= 0.2121,KC= 0.216 Ncalc = 1.52 Biaxial (+), a=1.51, b=1.513, g=1.517, bire=0.0070 |
colorless. |
colorless. |
colorless. |
| Calculated Properties of Monteregianite-(Y)Bulk Density (Electron Density)=2.38 gm/cc |
note: Specific Gravity of Monteregianite-(Y) =2.39 gm/cc. Fermion Index = 0.01 |
Boson Index = 0.99 PEMonteregianite-(Y) = 13.06 barns/electron |
U=PEMonteregianite-(Y) x relectron= 31.07 barns/cc. |
GRapi = 64.20 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Monteregianite-(Y) | Monteregianite-(Y) Classification72.05.01.02 (72)Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings |
|
(72.05)with corrugated and complex layers |
|
(72.05.01)Rhodesite group |
|
|
|
|
|
|
09.EB.15 09 - SILICATES (Germanates) |
|
09.E - Phyllosilicates |
|
09.EB -Double nets with 4- and 6-membered rings |
|
| Other Monteregianite-(Y) InformationNAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;www.saint-hilaire.ca) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
Links to other databases for Monteregianite-(Y) : |
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Athena 5 - EUROmin Project 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - WWW-MINCRYST Search for Monteregianite-(Y) using: Visit our Advertisers for Monteregianite-(Y) : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Monteregianite-(Y) Mineral Data : Ask about Monteregianite-(Y) here : Print or Cut-and-Paste your Monteregianite-(Y) Specimen Label here :
| |
|
| | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||