Tunellite Mineral Data

Tunellite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About


Dakota Matrix
[Newest Minerals] [Rare Minerals] [Cabinet Specimens] [About Us] [Image Gallery]
Dakota Matrix Minerals
Updated weekly, for the collector, educator, and researcher since 1996
Extensive Inventory of very Rare Minerals. Visa and Mastercard are Welcome


General Tunellite Information

Help on Chemical Formula: Chemical Formula: SrB6O9(OH)2•3(H2O)
Help on Composition: Composition: Molecular Weight = 384.54 gm
   Strontium  22.79 %  Sr   26.95 % SrO
   Boron      16.87 %  B    54.31 % B2O3
   Hydrogen    2.10 %  H    18.74 % H2O
   Oxygen     58.25 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: SrB6O9(OH)2•3(H2O)
Help on Environment: Environment: Borate deposits.
Help on IMA Status: IMA Status: Approved IMA 1961
Help on Locality: Locality: U. S. Borax open pit, Boron, Kern Co., California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for George Tunnel (1900-1996), U. S. Mineralogist.
Help on Name Pronunciation: Name Pronunciation: Tunellite + Pronunciation Say TUNELLITE
Help on Synonym: Synonym: Balavinskite ?
  ICSD 15479
  PDF 14-616
 

Tunellite Image

Click Here for Larger Tunellite Image in a New Browser Window Images:
Click Here for Larger Tunellite Image

Tunellite

Comments: Clear, prismatic crystals of tunellite on matrix.
Location: Death Valley, Inyo County, California, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tunellite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.7521:1:1.2095
Help on Cell Dimensions: Cell Dimensions: a = 14.39, b = 8.213, c = 9.934, Z = 4; beta = 114.067° V = 1,071.99 Den(Calc)= 2.38
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.57(1), 5.135(0.3), 6.97(0.25),
Click Here for Large Tunellite Structure Window 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


Clark J R , American Mineralogist , 49 (1964) p.1549-1568, The crystal structure of tunellite, SrB6O9(OH)2.3H2O

View Additional jPOWD Structure files for Tunellite
[1]
 

Physical Properties of Tunellite

Help on Cleavage: Cleavage: {100} Perfect, {001} Distinct
Help on Color: Color: Colorless.
Help on Density: Density: 2.4
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Nodular - Tuberose forms having irregular protuberances over the surface.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Fluorescent, Short UV=butter yellow, Long UV=butter yellow.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Tunellite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.026 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2272,KPDmeas= 0.2253,KC= 0.2196
Ncalc = 1.52 - 1.53
Help on Optical Data: Optical Data: Biaxial (+), a=1.519, b=1.534, g=1.569, bire=0.0500
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Tunellite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.35 gm/cc
note: Specific Gravity of Tunellite =2.40 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PETunellite = 24.87 barns/electron
U=PETunellite x rElectron Density= 58.36 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tunellite is Not Radioactive
 

Tunellite Classification
Help on Dana Class: Dana Class: 26.06.06.02 (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.06)Dana Type
  (26.06.06)Dana Group
 
26.06.06.01 Nobleite CaB6O9(OH)2•3(H2O) P 21/a 2/m
 
26.06.06.02 Tunellite SrB6O9(OH)2•3(H2O) P 21/a 2/m
Help on Strunz Class: Strunz Class: 06.FC.05 06 - BORATES
  06.F - Hexaborates
  06.FC -Phyllo-hexaborates
 
06.FC.05 Balavinskite? Sr2B6O11•4(H2O) Mono ? Mono
 
06.FC.05 Nobleite CaB6O9(OH)2•3(H2O) P 21/a 2/m
 
06.FC.05 Tunellite SrB6O9(OH)2•3(H2O) P 21/a 2/m
 

Other Tunellite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Tunellite :
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

Search for Tunellite using:

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

Visit our Advertisers for Tunellite :

AA Mineral Specimens

B & 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 Tunellite Mineral Data :

Ask about Tunellite 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 Espaņol

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

Tunellite

SrB6O9(OH)2•3(H2O)
Dana No: 26.06.06.02 Strunz No: 06.FC.05
Locality:

 

Notes: