Yugawaralite 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 Yugawaralite Information

Chemical Formula:

CaAl2Si6O16•4(H2O)

Composition:

Molecular Weight = 590.61 gm

Calcium 6.79 % Ca 9.49 % CaO

Aluminum 9.14 % Al 17.26 % Al₂O₃

Silicon 28.53 % Si 61.04 % SiO₂

Hydrogen 1.37 % H 12.20 % H₂O

Oxygen 54.18 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaAl₂Si₆O₁₆•4(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1952

Locality:

Yugawara Hot Springs, Kanagawa Prefecture, Honshu, Japan. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Yugawaralite + Pronunciation

Synonym:

ICSD 29505

PDF 39-1372

Yugawaralite Image

Images:

Yugawaralite

Comments: Pearly translucent colorless yugawaralite microcrystals.
Location: Klif Hvalfjordur, Iceland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Yugawaralite

Comments: Yugawaralite, in well developed vitreous crystals up to 1 cm. in a large vug on matix.
Location: Khandivaly Quarry, Maharastra, India. Scale: Picture size 2 cm.
© Sandro Maggia/Minernet.it

Yugawaralite Crystallography

Axial Ratios:

a:b:c =0.4804:1:0.7187

Cell Dimensions:

a = 6.728, b = 14.004, c = 10.066, Z = 2; beta = 111.13° V = 884.64 Den(Calc)= 2.22

Crystal System:

Monoclinic - DomaticH-M Symbol (m) Space Group: Pc

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

By Intensity(I/I_o): 3.056(1), 5.82(0.9), 4.68(0.85),

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

Artioli G , Stahl K , Cruciani G , Gualtieri A , Hanson J C , American Mineralogist , 86 (2001) p.185-192, In situ dehydration of yugawaralite, Sample: at T = 315 K

View Additional jPOWD Structure files for Yugawaralite
[1] [2]

Physical Properties of Yugawaralite

Cleavage:

{010} Indistinct

Color:

Colorless, White.

Density:

2.23

Diaphaneity:

Transparent

Fracture:

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

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Yugawaralite

Gladstone-Dale:

CI meas= 0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2246,KPDmeas= 0.2236,KC= 0.2241
Ncalc = 1.5

Optical Data:

Biaxial (+), a=1.495, b=1.497, g=1.504, bire=0.0090, 2V(Calc)=58, 2V(Meas)=78.

Calculated Properties of Yugawaralite

Electron Density:

Bulk Density (Electron Density)=2.24 gm/cc
note: Specific Gravity of Yugawaralite =2.22 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Yugawaralite= 2.21 barns/electron
U=PE_Yugawaralite x rElectron Density= 4.96 barns/cc.

Radioactivity:

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

Yugawaralite Classification

Dana Class:

77.01.07.02 (77)Tectosilicate Zeolite group

(77.01)true zeolites

(77.01.07)Brewsterite and related species

77.01.07.01 Brewsterite-Sr (Sr,Ba)Al4Si12O32•10(H2O) P 2₁/m 2/m

77.01.07.01a Brewsterite-Ba! (Ba,Sr)Al2Si6O16•5(H2O) P 2₁/m,P 2₁ Mono

77.01.07.02 Yugawaralite CaAl2Si6O16•4(H2O) Pc m

77.01.07.03 Goosecreekite CaAl2Si6O16•5(H2O) P 2₁ 2

77.01.07.04 Roggianite Ca2[Be(OH)2Al2Si4O13]•<2•5(H2O) I 4/mcm 4/m 2/m 2/m

Strunz Class:

09.GB.15 09 - SILICATES (Germanates)

09.G - Tektosilicates with Zeolitic H2O

09.GB -Chains of single connected 4-membered rings

09.GB.15 Yugawaralite CaAl2Si6O16•4(H2O) Pc m

Other Yugawaralite Information

References:

NAME( CanMin, v 35, p 1591) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Yugawaralite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
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
16 - Zeolite Database by Bruno Herreros

Search for Yugawaralite using:

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

Visit our Advertisers for Yugawaralite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Yugawaralite Mineral Data :

Ask about Yugawaralite 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 Yugawaralite Specimen Label here :

Yugawaralite

CaAl2Si6O16•4(H2O)
Dana No: 77.01.07.02 Strunz No: 09.GB.15
Locality:

Notes: