Laplandite-(Ce) Mineral Data (original) (raw)

General Laplandite-(Ce) Information

Help on Chemical Formula: Chemical Formula:

Na4CeTiPSi7O22•5(H2O)

Help on Composition: Composition:

Molecular Weight = 949.59 gm

Sodium 9.68 % Na 13.05 % Na2O

Cerium 14.76 % Ce 17.28 % Ce2O3

Titanium 5.04 % Ti 8.41 % TiO2

Silicon 20.70 % Si 44.29 % SiO2

Phosphorus 3.26 % P 7.47 % P2O5

Hydrogen 1.06 % H 9.49 % H2O

Oxygen 45.49 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Na4CeTiPSi7O22•5(H2O)

Help on Environment: Environment:

In the natrolite zone of a pegmatite in a differentiated alkalic massif.

Help on IMA Status: IMA Status:

Approved IMA 1987

Help on Locality: Locality:

Yubileinaya pegmatite, Karnasurt Mt, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Lappland (Lapland), the region in which the Kola Peninsula lies.

Help on Name Pronunciation: Name Pronunciation:

Laplandite-(Ce) + Pronunciation Say LAPLANDITE-(CE)

Laplandite-(Ce) Image

Click Here for Larger Laplandite-(Ce) Image in a New Browser Window Images:

Click Here for Larger Laplandite-(Ce) Image Laplandite-(Ce) Comments: Grayish-white radial aggregates of laplandite-(Ce). Location: Yubileinaya pegmatite, Karnasurt Mt, Lovozero Massif, Kola Peninsula, Russia.Scale: Picture Size 3 mm. © Diederik Visser

Laplandite-(Ce) Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.5055:1:1.5472

Help on Cell Dimensions: Cell Dimensions:

a = 7.27, b = 14.38, c = 22.25, Z = 4; V = 2,326.07 Den(Calc)= 2.71

Help on Crystal System: Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P mmm

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.03(1), 7.27(1), 3.76(1),3.35(1), 2.8(0.8), 3.36(0.8), 6.47(0.7),

Physical Properties of Laplandite-(Ce)

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Bluish gray, Yellow gray, Light gray.

Help on Density: Density:

2.83

Help on Diaphaneity: Diaphaneity:

Transparent to Translucent

Help on Fracture: Fracture:

Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende).

Help on Habit: Habit:

Aggregates - Made of numerous individual crystals or clusters.

Help on Habit: Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Help on Habit: Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Help on Hardness: Hardness:

2-3 - Gypsum-Calcite

Help on Luster: Luster:

Vitreous - Greasy

Help on Streak: Streak:

white

Optical Properties of Laplandite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.073 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2137,KPDmeas= 0.2046,KC= 0.2208
Ncalc = 1.6 - 1.62

Help on Optical Data: Optical Data:

Biaxial (-), a=1.568, b=1.584, g=1.585, bire=0.0170, 2V(Calc)=26, 2V(Meas)=28.

Calculated Properties of Laplandite-(Ce)

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.64 gm/cc
note: Specific Gravity of Laplandite-(Ce) =2.71 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Help on Photoelectric: Photoelectric:

PELaplandite-(Ce) = 71.84 barns/electron
U=PELaplandite-(Ce) x relectron= 189.85 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 15,348.02 (Gamma Ray American Petroleum Institute Units)
Concentration of Laplandite-(Ce) per GRapi unit = 65.16 (PPM)

Laplandite-(Ce) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Radioactivity from Laplandite-(Ce) - weak

SpecimenSizeWeight/Volume(Sphere) * CalculatedActivityBecquerels(Bq) CalculatedActivityCuries (Ci) EstimatedActivityGR(api) EstimatedExposure(mRem**)/hrIf Held in HandFor One Hour
1000 gm / 8.90 cm 330,519 8.93E-06 15,348.02 5.05
100 gm / 4.13 cm 33,052 8.93E-07 1,534.80 0.50
10 gm / 1.92 cm 3,305 8.93E-08 153.48 0.05
1 gm / 8.90 mm 331 8.93E-09 15.35 0.01
0.1 gm / 4.13 mm 33 8.93E-10 1.53 0.00
0.01 gm / 1.92 mm 3 8.93E-11 0.15 0.00
0.001 gm / 0.89 mm 0 8.93E-12 0.02 0.00

Weight of pure Laplandite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.71 gm/cc.*
Goverment Estimate of Average Annual Exposure (360 mRem)**
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 0.74 % Th) From Sum REE Elements (14.76 % REE)

Laplandite-(Ce) Classification

Help on Dana Class: Dana Class:

78.07.09.01 (78)Unclassified silicates

(78.07)wholly unclassified silicates

(78.07.09)Dana Group

78.07.09.01 Laplandite-(Ce) Na4CeTiPSi7O22•5(H2O) P mmm 2/m 2/m 2/m

Help on Strunz Class: Strunz Class:

09.DJ.10 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DJ -Inosilicates with 4-periodic double and triple chains

09.DJ.10 Laplandite-(Ce) Na4CeTiPSi7O22•5(H2O) P mmm 2/m 2/m 2/m

Other Laplandite-(Ce) Information

Help on References: References:

NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Help on See Also: See Also:

Links to other databases for Laplandite-(Ce) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Print or Cut-and-Paste your Laplandite-(Ce) Specimen Label here :

Laplandite-(Ce)

Na4CeTiPSi7O22•5(H2O)
Dana No: 78.07.09.01 Strunz No: 09.DJ.10
Locality:

Notes: