Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Luetheite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
Cu2Al2(AsO4)2(OH)4
System:
Monoclinic
Colour:
blue, pale green (upon ...
Hardness:
3
Name:
After Ronald D. Luethe (1944– ), geologist for Phelps Dodge Corporation, Douglas, Arizona, USA, who found the first material.
The aluminium analogue of Chenevixite. Chenevixite-Luetheite Series.

Classification of Luetheite

Approved 1976
8.DD.05

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
D : With only medium-sized cations, (OH, etc.):RO4= 2:1
42.7.10.2

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
20.4.4

20 : Arsenates (also arsenates with phosphate, but without other anions)
4 : Arsenates of Group III metals (Al, rare earths)
mindat.org URL:
http://www.mindat.org/min-2456.html
Please feel free to link to this page.

First Recorded Occurrence of Luetheite

General Appearance of First Recorded Material:
Cavity fillings.
Year of Discovery:
1976
Geological Setting of First Recorded Material:
Intensely altered volcanic rocks.
Associated Minerals at First Recorded Locality:

Physical Properties of Luetheite

Diaphaneity (Transparency):
Translucent
Colour:
blue, pale green (upon alteration).
Comment:
May be tan
Streak:
white
Hardness (Mohs):
3
Tenacity:
Brittle
Cleavage:
Distinct/Good
On {100}, fair to good.
Density:
4.28 g/cm3 (Measured)    4.4 g/cm3 (Calculated)

Crystallography of Luetheite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 14.743Å, b = 5.093Å, c = 5.598Å
β = 101.49°
Ratio:
a:b:c = 2.895 : 1 : 1.099
Unit Cell Volume:
V 411.91 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals thin blades exhibiting prominent {100} with {140} and {011}. Commonly in spherulitic aggregates.
Twinning:
Observed at a very fine scale.
X-Ray Powder Diffraction Data:
d-spacingIntensity
7.21 (7)
3.498 (10)
2.546 (3)
2.507 (5)
2.454 (3)
1.803 (5)
1.270 (4)

Optical Data of Luetheite

Type:
Biaxial (+)
RI values:
nα = 1.752 nβ = 1.775 nγ = 1.796
2V:
Calculated: 88°
Max Birefringence:
δ = 0.044
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r < v marked
Pleochroism:
Weak
Comments:
Faint in pale blues.

Chemical Properties of Luetheite

Formula:
Cu2Al2(AsO4)2(OH)4
Essential elements:
All elements listed in formula:

Relationship of Luetheite to other Species

Series:
Forms a series with Chenevixite (see here)
8.DD.05ChenevixiteCu2Fe23+(AsO4)2(OH)4
8.DD.10Akrochordite(Mn2+,Mg)5(AsO4)2(OH)4 · 4H2O
8.DD.10GuanacoiteCu2Mg3(AsO4)2(OH)4 · 4H2O
8.DD.15Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2O
8.DD.15ChalcosideriteCu(Fe3+,Al)6(PO4)4(OH)8 · 4H2O
8.DD.15Faustite(Zn,Cu)Al6(PO4)4(OH)8 · 4H2O
8.DD.15PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2O
8.DD.15TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
8.DD.15AfmiteAl3(OH)4(H2O)3(PO4)(PO3OH) · H2O
8.DD.20Childrenite(Fe2+,Mn2+)Al(PO4)(OH)2 · H2O
8.DD.20Eosphorite(Mn2+,Fe2+)Al(PO4)(OH)2 · H2O
8.DD.20Ernstite(Mn2+,Fe3+)Al(PO4)(OH,O)2 · H2O
20.4.1MansfielditeAlAsO4 · 2H2O
20.4.2BulachiteAl2(AsO4)(OH)3 · 3H2O
20.4.3PharmacoalumiteKAl4(AsO4)3(OH)4 · 6.5H2O
20.4.5ArsenogoyaziteSrAl3(AsO4)2(OH)5 · H2O
20.4.6ArsenocrandalliteCaAl3(AsO4)2(OH)5 · H2O
20.4.7Arsenoflorencite-(Ce)CeAl3(AsO4)2(OH)6
20.4.8Arsenoflorencite-(La)LaAl3(AsO4)2(OH)6
20.4.9Arsenoflorencite-(Nd)NdAl3(AsO4)2(OH)6
20.4.10Gerdtremmelite(Zn,Fe)(Al,Fe)2(AsO4)(OH)5
20.4.11Gasparite-(Ce)(Ce,REE)(AsO4)
20.4.12Chernovite-(Y)Y(AsO4)
20.4.13Agardite-(Y)YCu6(AsO4)3(OH)6 · 3H2O
20.4.14Agardite-(La)LaCu6(AsO4)3(OH)6 · 3H2O
20.4.15GoudeyiteAlCu6(AsO4)3(OH)6 · 3H2O
20.4.16Retzian-(Ce)Mn22+Ce(AsO4)(OH)4
20.4.17Retzian-(La)(Mn2+,Mg)2(La,Ce,Nd)(AsO4)(OH)4
20.4.18Retzian-(Nd)Mn22+(Nd,Ce,La)(AsO4)(OH)4

Other Names for Luetheite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Luetheite

Reference List:
Williams, S. A. (1977): Luetheite, Cu2Al2(AsO4)2(OH)4.H2O, a new mineral from Arizona, compared with chenevixite. Mineralogical Magazine: 41: 27-32.

American Mineralogist (1977): 62: 1058.

Burns, P. C., Smith, J. V. and Steele, I. M. (2000): Arizona porphyry copper/hydrothermal deposits I. The structure of chenevixite and luetheite. Mineral. Mag., 64, 25-30.

Internet Links for Luetheite

Localities for Luetheite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia
 
  • Western Australia
    • Ashburton Shire
Mineralogical Record: 24: 203.
Mineralogical Record 24,203-216,218.
USA
 
  • Arizona
    • Santa Cruz Co.
      • Patagonia Mts
        • Harshaw District
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 281; Williams, S.A. (1977), Luetheite, Cu2Al2(AsO4)2(OH)4.H2O, a new mineral from Arizona compared with chenevixite, Min.Mag.: 41: 27-42.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 187.
[Nickel & Nichols, 1991 - "Mineral Reference Manual", p123; Min.Mag.(1977) 41, 27-32]
  • Nevada
    • Pershing Co.
      • Antelope District
        • Majuba Hill Mine (Majuba Mine; Mylar Mine; Tin Mine; Nevada Bureau of Mines and Geology sample sites 2844 & 2846)
Jensen, M. (1993): Update on the mineralogy of the Majuba Hill mine, Pershing County. Mineralogical Record. 24, 171-180.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: April 26, 2015 00:29:56 Page generated: April 25, 2015 10:01:48