Ajoite  Mineral Data

Ajoite Mineral Data

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

Advertisment
Hudson Institute of Mineralogy

General Ajoite Information

Help on Chemical  Formula: Chemical Formula: (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Help on Composition: Composition: Molecular Weight = 3,926.74 gm
   Potassium   2.24 %  K     2.70 % K2O
   Sodium      1.02 %  Na    1.38 % Na2O
   Aluminum    2.06 %  Al    3.89 % Al2O3
   Copper     32.37 %  Cu   40.51 % CuO
   Silicon    20.74 %  Si   44.37 % SiO2
   Hydrogen    0.82 %  H     7.34 % H2O
   Oxygen     40.74 %  O
             ______        ______ 
             100.00 %      100.20 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K2.25Na1.75Cu20Al3Si29O76(OH)16•8(H2O)
Help on Environment: Environment: Secondary copper mineral.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1958
Help on Locality: Locality: New Cornelia mine, Ajo, Pima County,, Arizona, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Ajoite Say AJOITE
 

Ajoite Image

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

Ajoite

Comments: Bluish, bladed ajoite crystals.
Location: New Cornelia mine, Ajo, Pima County, Arizona, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

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

Ajoite   Shattuckite

Comments: Dark blue, tabular crystals of shattuckite on light blue ajoite.
Location: New Cornelia mine, Ajo, Pima County, Arizona, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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

Ajoite

Comments: Aqua blue, long bladed crystals or ajoite on matrix.
Location: New Cornelia mine, Pima Co., Arizona, USA. Scale: Crystal size 0.75 mm.
© Tom Loomis / Dakota Matrix

Ajoite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9961:1:1.061
Help on Cell Dimensions: Cell Dimensions: a = 13.634, b = 13.687, c = 14.522, Z = 1; alpha = 110.83°, beta = 107.21°, gamma = 105.68° V = 2,329.37 Den(Calc)= 2.80
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 12.4(1), 3.34(0.25), 6.19(0.09),
Click Here for Large Ajoite 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


Pluth J J , Smith J V , Proceedings of the National Academy of Sciences of the United States of America , 99 (2002) p.11002-11005, Arizona porphyry copper/hydrothermal deposits II:, Crystal structure of ajoite, (K+Na)3Cu20Al3Si29O76(OH)16*~8H2O

 

Physical Properties of Ajoite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Blue green.
Help on Density: Density: 2.96
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: greenish white
 

Optical Properties of Ajoite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1993,KPDmeas= 0.2,KC= 0.2021
Ncalc = 1.6
Help on Optical Data: Optical Data: Biaxial (+), a=1.55, b=1.585, g=1.641, bire=0.0910, 2V(Calc)=80, 2V(Meas)=68-80.
Help on Pleochroism (x): Pleochroism (x): very light bluish green.
Help on Pleochroism (y): Pleochroism (y): brilliant bluish green.
Help on Pleochroism (z): Pleochroism (z): brilliant bluish green.
 

Calculated Properties of Ajoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.89 gm/cc
note: Specific Gravity of Ajoite =2.96 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0098859471
Boson Index = 0.9901140529
Help on Photoelectric: Photoelectric: PEAjoite = 15.08 barns/electron
U=PEAjoite x relectron= 43.63 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 31.60 (Gamma Ray American Petroleum Institute Units)
Concentration of Ajoite per GRapi unit = 3.16 (%)

Estimated Radioactivity from Ajoite - barely detectable

 

Ajoite Classification

Help on  Dana Class: Dana Class: 78.05.01.01 (78)Unclassified silicates
  (78.05)possible phyllosilicates
  (78.05.01)Dana Group
 
78.05.01.01 Ajoite (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O) P1 1
Help on  Strunz Class: Strunz Class: 09.EA.70 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EA -Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings
 
09.EA.70 Ajoite (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O) P1 1
 

Other Ajoite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8, AmMin v 88, p 1629) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Ajoite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info

Search for Ajoite using:

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

Visit our Advertisers for Ajoite :

A Bijoux Google Search for Ajoite
Adam's Minerals Google Search for Ajoite
Cape Minerals Google Search for Ajoite
Dakota Matrix Minerals Google Search for Ajoite
Excalibur Mineral Corp. Google Search for Ajoite
Exceptional Minerals Google Search for Ajoite
John Betts Fine Minerals Search for Ajoite
McDougall Minerals Google Search for Ajoite
Mineral News Website Link
Rock and Mineral Shows Google Search for Ajoite
Weinrich Minerals, Inc. Google Search for Ajoite

Ask about Ajoite 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 Ajoite Specimen Label here :

Ajoite

(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Dana No: 78.05.01.01 Strunz No: 09.EA.70
Locality:

 

Notes: