Lomonosovite Mineral Data

[About Us] [Products] [Fluorescent Mineals] [Contact Us]
UVTools is a supplier of affordable ultraviolet lamps and fluorescent minerals
Our customers include mineral dealers, gift shops, and museums worldwide
We provide an array of shortwave, midwave, and longwave lamps at the best price!

General Lomonosovite Information

Chemical Formula:

Na5Ti2O2(Si2O7)(PO4)

Composition:

Molecular Weight = 505.85 gm

Sodium 22.72 % Na 30.63 % Na₂O

Titanium 18.93 % Ti 31.58 % TiO₂

Silicon 11.10 % Si 23.76 % SiO₂

Phosphorus 6.12 % P 14.03 % P₂O₅

Oxygen 41.12 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₅Ti₂O₂Si₂O₇(PO₄)

IMA Status:

Valid Species (Pre-IMA) 1950

Locality:

Lovozero alkaline complex, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Mikhail V. Lomonosov (1711-1765), Russian mineralogist and naturalist.

Name Pronunciation:

Lomonosovite + Pronunciation

Synonym:

ICSD 34069

PDF 15-155

Lomonosovite Image

Images:

Lomonosovite

Comments: Aegerine schist with reddish crystalline grains of lomonosovite.
Location: Ilimaussaq, Kvanefjeld, Greenland. Scale: Picture size 0.5 cm.
© John Veevaert

Images:

Lomonosovite Bornemanite

Comments: Yellow crystalline bornemanite in dark brown lomonosovite.
Location: Yubileinaya Pegmatite, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Lomonosovite Crystallography

Axial Ratios:

a:b:c =0.7721:1:2.0393

Cell Dimensions:

a = 5.49, b = 7.11, c = 14.5, Z = 2; alpha = 101°, beta = 96°, gamma = 90° V = 552.55 Den(Calc)= 3.04

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 2.83(1), 1.778(0.9), 1.84(0.8),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Belov N V , Gavrilova G S , Solov eva L P , Khalilov A D , Soviet Physics Doklady , 22 (1977) p.422-424, The refined structure of lomonosovite

Physical Properties of Lomonosovite

Cleavage:

{100} Perfect

Color:

Dark brown, Pink violet, Black.

Density:

3.12 - 3.15, Average = 3.13

Diaphaneity:

Transparent to Subopaque

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

3-4 - Calcite-Fluorite

Luster:

Vitreous - Adamantine

Streak:

brown

Optical Properties of Lomonosovite

Gladstone-Dale:

CI meas= 0.092 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.064 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.241,KPDmeas= 0.2337,KC= 0.2574
Ncalc = 1.78 - 1.81

Optical Data:

Biaxial (-), a=1.67, b=1.75, g=1.778, bire=0.1080, 2V(Calc)=58, 2V(Meas)=56.

Pleochroism (x):

nearly colorless or nearly colorless.

Pleochroism (y):

dark brown or lilac.

Pleochroism (z):

yellowish brown or yellowish brown.

Calculated Properties of Lomonosovite

Electron Density:

Bulk Density (Electron Density)=2.96 gm/cc
note: Specific Gravity of Lomonosovite =3.04 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Lomonosovite= 4.19 barns/electron
U=PE_Lomonosovite x rElectron Density= 12.38 barns/cc.

Radioactivity:

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

Lomonosovite Classification

Dana Class:

56.04.01.01 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O

(56.04)with [Si2O7] with phosphate, water

(56.04.01)Lomonosovite group

56.04.01.01 Lomonosovite Na5Ti2O2(Si2O7)(PO4) P1 1

56.04.01.02 Polyphite-VIII Na17Ca3Mg(Ti,Mn)4[Si2O7]2(PO4)6O2F6 P1 1

56.04.01.03 Quadruphite-VIII Na14CaMgTi4(Si2O7)2(PO4)4O4F2 P1 1

56.04.01.04 Sobolevite Na11(Na,Ca)4(Mg,Mn)Ti4(Si4O12)(PO4)4O5F3 P1 1

Strunz Class:

09.BE.32 09 - SILICATES (Germanates)

09.B - Sorosilicates

09.BE -Si2O7 groups with additional anions;

09.BE.32 Lomonosovite Na5Ti2O2(Si2O7)(PO4) P1 1

Other Lomonosovite Information

References:

NAME( Dana8) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Lomonosovite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Lomonosovite using:

[ALTAVISTA] [AOL] [bing] [GeoScienceWorld] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Lomonosovite :

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Lapis Mineral Journal

Mineral News

UV Tools

Wrights Rock Shop

Translate Lomonosovite Mineral Data :

Ask about Lomonosovite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Lomonosovite

Na5Ti2O2(Si2O7)(PO4)
Dana No: 56.04.01.01 Strunz No: 09.BE.32
Locality:

Notes: