Augelite Mineral Data

General Augelite Information

Chemical Formula:

Al2(PO4)(OH)3

Composition:

Molecular Weight = 199.96 gm

Aluminum 26.99 % Al 50.99 % Al₂O₃

Phosphorus 15.49 % P 35.49 % P₂O₅

Hydrogen 1.51 % H 13.51 % H₂O

Oxygen 56.01 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Al₂(PO₄)(OH)₃

Environment:

Formed by hydrogen metamorphism of phosphate-bearing rocks in peraluminous sediments; in some high-temperature hydrothermal ore deposits.

IMA Status:

Valid Species (Pre-IMA) 1868

Locality:

From the Vastana mine, near Nasum, Skane, and at Kalsjoberg, Varmland, Sweden. Link to MinDat.org Location Data.

Name Origin:

From the Greek for "luster," for its pearly luster on the cleavage.

Name Pronunciation:

Augelite

Synonym:

ICSD 24430

PDF 34-151

Augelite Image

Images:

Augelite

Comments: Apple green augelite with semi-transparent, well developed, brilliant crystals.
Location: Rapid Creek, Yukon, Canada. Scale: 3.5 x 2 cm.
© Fabre Minerals

Images:

Augelite

Comments: Green to white, striated, blocky augelite crystal on matrix.
Location: Ortega mine, Ancash dept., Peru. Scale: Crystal length 2.3 cm.
© Tom Loomis / Dakota Matrix

Augelite Crystallography

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

By Intensity(I/I_o): 3.338(1), 3.506(0.9), 4(0.8),

Forms:

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Forms: ( 1 1 1) ( 0 2 1) ( 0 1 0) ( 2 2 1) ( 2 0 1) ( 2 0 1) ( 1 1 0) ( 1 0 0) ( 0 0 1)

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Physical Properties of Augelite

Color:

Colorless, Yellow, Yellow green, White, Light blue.

Optical Properties of Augelite

Gladstone-Dale:

CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2137,KPDmeas= 0.2148,KC= 0.2165
Ncalc = 1.58 - 1.59

Calculated Properties of Augelite

Electron Density:

Bulk Density (Electron Density)=2.70 gm/cc
note: Specific Gravity of Augelite =2.70 gm/cc.

Fermion Index:

Fermion Index = 0.0002711168
Boson Index = 0.9997288832

Photoelectric:

PE_Augelite= 1.56 barns/electron
U=PE_Augelite x rElectron Density= 4.20 barns/cc.

Radioactivity:

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

Augelite Classification

Dana Class:

41.06.08.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.06)where (A)2 (XO4) Zq

(41.06.08)Dana Group

41.06.08.01 Augelite Al2(PO4)(OH)3 C 2/m 2/m

Strunz Class:

08.BE.05 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BE -With only medium-sized cations, (OH, etc.):RO4 > 2:1

08.BE.05 Augelite Al2(PO4)(OH)3 C 2/m 2/m

Other Augelite Information

See Also:

Links to other databases for Augelite :
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
16 - WWW-MINCRYST

Search for Augelite using:

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Ask about Augelite 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 Augelite Specimen Label here :

Augelite

Al2(PO4)(OH)3
Dana No: 41.06.08.01 Strunz No: 08.BE.05
Locality:

Notes:

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