Rilandite Mineral Data

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

Advertisment
McDougall Minerals sells high-quality mineral specimens from all over the world to collectors of all levels, from beginners to connoisseurs
 Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.
 Join the club, silver, gold and platinum-level memberships available as low as $10.00 a month. High quality mineral specimens mailed to your home or school each month. An affordable way to build your collection.
 John Betts - Fine Minerals, New York. Dealers of Fine Minerals and Natural Crystal Clusters since 1989. We buy rock collections, we buy gem collections, we buy mineral collections.

General Rilandite Information

Help on Chemical Formula: Chemical Formula: (Cr,Al)6SiO11•5(H2O) (?)
Help on Composition: Composition: Molecular Weight = 568.61 gm
   Aluminum   7.12 %  Al   13.45 % Al2O3
   Chromium  41.15 %  Cr   60.14 % Cr2O3
   Silicon    4.94 %  Si   10.57 % SiO2
   Hydrogen   1.77 %  H    15.84 % H2O
   Oxygen    45.02 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cr4.5Al1.5SiO11•5(H2O)
Help on Environment: Environment: Sandstone-hosted uranium-vanadium deposits. Needs further study.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1933
Help on Locality: Locality: Carnotite claims 20 km ENE fo Meeker, Colorado, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for James L. Riland (1857-1938?), newspaper publisher of Meeker, Colorado, on whose claim the mineral was found.
 

Rilandite Image

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

Rilandite

Comments: Dark brown opaque resinous rilandite cleavage fragment.
Location: J. L. Riland Claim, near Meeker, Rio Blanco County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rilandite Crystallography
Help on Crystal System: Crystal System: MonoclinicSpace Group: Mono ?
 

Physical Properties of Rilandite

Help on Color: Color: Black.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Resinous
Help on Streak: Streak: grayish brown
 

Optical Properties of Rilandite

Help on Optical Data: Optical Data:
 

Calculated Properties of Rilandite

Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PERilandite = 9.54 barns/electron
U=PERilandite x rElectron Density= . barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rilandite is Not Radioactive
 

Rilandite Classification
Help on Dana Class: Dana Class: 07.11.14.01 (07)Multiple Oxides
  (07.11)as titano-oxides with [4] and [6] substitutions
  (07.11.14)Dana Group
 
07.11.14.01 Rilandite (Cr,Al)6SiO11•5(H2O)(?) Mono ? Mono
Help on Strunz Class: Strunz Class: 09.HB.10 09 - SILICATES (Germanates)
  09.H - Unclassified Silicates
  09.HB -With Ti, V, Cr
 
09.HB.10 Rilandite (Cr,Al)6SiO11•5(H2O)(?) Mono ? Mono
 

Other Rilandite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Rilandite :
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

Search for Rilandite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Rilandite :

Dakota Matrix Minerals Google Search for Rilandite
Excalibur Mineral Corp. Google Search for Rilandite
John Betts Fine Minerals Search for Rilandite
McDougall Minerals Google Search for Rilandite
Mineral News Website Link
Mineral of the Month Club Google Search for Rilandite
Rock and Mineral Shows Google Search for Rilandite
Weinrich Minerals, Inc. Google Search for Rilandite

Ask about Rilandite 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 Rilandite Specimen Label here :

Rilandite

(Cr,Al)6SiO11•5(H2O) (?)
Dana No: 07.11.14.01 Strunz No: 09.HB.10
Locality:

 

Notes: