Sorensenite Mineral Data

Sorensenite Mineral Data +

[Newest Minerals] [Equipment] [Analytical Services] [About Us] [Mineral Gallery] [eBay Store]
See Also: [Diamond Crystals] [Mineral News] [Hudson Institute] [Minerals on CDROM]
Rare Minerals, Meteorites, Equipment and Analytical Services
Excalibur Mineral Company, World leaders in the supply of rare species
Serving the scientific and collector communities since 1974

General Sorensenite Information

Chemical Formula:

Na4SnBe2Si6O18·2(H2O)

Composition:

Molecular Weight = 721.23 gm

Sodium 12.75 % Na 17.19 % Na₂O

Beryllium 2.50 % Be 6.94 % BeO

Silicon 23.36 % Si 49.99 % SiO₂

Tin 16.46 % Sn 20.90 % SnO₂

Hydrogen 0.56 % H 5.00 % H₂O

Oxygen 44.37 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₄SnBe₂Si₆O₁₈·2(H₂O)

Environment:

Nepheline syenite.

IMA Status:

Approved IMA 1965

Locality:

Nakalaq in the Ilimaussaq intrusion complex, Greenland. Link to MinDat.org Location Data.

Name Origin:

Named for Henning Sorensen (1926-), emeritus professor, Hakkaido University, Sapporo.

Synonym:

ICSD 34071

PDF 29-1178

Sorensenite Image

Images:

Sorensenite

Comments: Translucent white prismatic sorensenite crystals and crystalline in dark aegirine.
Location: Kvanefjeld, Ilimaussaq, Greenland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Sorensenite

Comments: Lght pink, prismatic crystals of sorensite to 5mm in dark green aegerine matrix.
Location: Kvanefjeld, Ilimaussaq, Greenland. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Sorensenite Crystallography

Axial Ratios:

a:b:c =2.7887:1:1.6218

Cell Dimensions:

a = 20.698, b = 7.422, c = 12.037, Z = 4; beta = 117.28° V = 1,643.47 Den(Calc)= 2.91

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c

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

By Intensity(I/I_o): 2.918(1), 2.96(0.85), 3.41(0.85),

Physical Properties of Sorensenite

Cleavage:

[???] Distinct, [???] Distinct

Color:

Colorless, Pinkish, Milky white.

Density:

2.9

Diaphaniety:

Transparent to Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

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

Hardness:

5.5 - Knife Blade

Luminescence:

Fluorescent.

Luster:

Vitreous - Silky

Streak:

white

Optical Properties of Sorensenite

Gladstone-Dale:

CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.001 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1999,KPDmeas= 0.2006,KC= 0.2001

Optical Data:

Biaxial (-), a=1.576-1.579, b=1.581-1.585, g=1.584-1.586, bire=0.0070-0.0080

Pleochroism (x):

anomalous yellow brown.

Pleochroism (y):

anomalous yellow brown.

Pleochroism (z):

anomalous blue.

Calculated Properties of Sorensenite

Electron Density:

r_electron=2.82 gm/cc
note: r_Sorensenite=2.91 gm/cc.

Fermion Index

Fermion Index = 0.06347
Boson Index = 0.93653

Photoelectric:

PE_Sorensenite= 47.86 barns/electron
U=PE_Sorensenite x r_electron= 135.18 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sorensenite is Not Radioactive

Sorensenite Classification

Dana Class:

65.2.4.1 (65)Inosilicate Single-Width Unbranched Chains, W=1

(65.2)with chains P=3

(65.2.4)Dana Group

65.2.4.1 Sorensenite Na4SnBe2Si6O18·2(H2O) C 2/c 2/m

Strunz Class:

VIII/F.20-05 VIII - Silicates

VIII/F - Inosilicates (chain and band) Triplet chains [Si3O9]6-

VIII/F.20 - Sorensenite - Para-umbite series

VIII/F.20-05 Sorensenite Na4SnBe2Si6O18·2(H2O) C 2/c 2/m

VIII/F.20-10 Umbite K2ZrSi3O9·(H2O) P 2₁2₁2₁ 2 2 2

VIII/F.20-20 Paraumbite K3Zr2HSi6O18·n(H2O)n=3to7 Unk Ortho

Other Sorensenite Information

References:

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

Search for Sorensenite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Sorensenite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Sorensenite Mineral Data :

Ask about Sorensenite 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 Sorensenite Specimen Label here :

Sorensenite

Na4SnBe2Si6O18·2(H2O)
Dana No: 65.2.4.1 Strunz No: VIII/F.20-05
Locality:

Notes: