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Evansite

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Richelle, Visé, Liège Province, Belgium
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Formula:
Al
 
3
[(OH)
 
6
|PO
 
4
] · 6H
 
2
O
System:AmorphousColour:Colourless, milk-white, ...
Hardness:3½ - 4
Name:For British metallurgist, Brooke Evans (1797-1862), Birmingham, England, who brought the first specimens from Hungary in 1855.


A secondary amorphous mineral commonly occurring with limonite and allophane.

Classification of Evansite

IMA status:Questionable/Doubtful
Strunz 8th edition ID:7/D.23-30
Nickel-Strunz 10th (pending) edition ID:8.DF.10

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
F : With only medium-sized cations, (OH,etc.):RO4 > 3:1
Dana 8th edition ID:42.1.2.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
1 : A3(XO4)Zq·xH2O
Hey's CIM Ref.:19.7.9

19 : Phosphates
7 : Phosphates of Al alone
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Type Occurrence of Evansite

Type Locality:Železník Mt. (Vashegy Mt.), Sirk (Szirk), Western Slovenské Rudohorie Mts, Banská Bystrica Region, Slovakia
Year of Discovery:1864

Physical Properties of Evansite

Lustre:Vitreous, Resinous, Waxy
Diaphaneity (Transparency):Transparent, Translucent
Comment:Lustre inclines toward resinous or waxy.
Colour:Colourless, milk-white, lightly tinted blue, green or yellow at times; brown, reddish-brown, or red due to FeO inclusions; colourless to brown in transmitted light
Streak:White; lightly tinted.
Hardness (Mohs):3½ - 4
Tenacity:Very brittle
Fracture:Conchoidal
Density (measured):1.8 - 2.2 g/cm3
Comment:Density usually about 1.9.

Crystallography of Evansite

Crystal System:Amorphous
Morphology:Botryoidal or reniform coatings; concentric, colloform structure at times; opaline; stalactitic. Massive.

Optical Data of Evansite

Type:Isotropic

Chemical Properties of Evansite

Formula:
Al
 
3
[(OH)
 
6
|PO
 
4
] · 6H
 
2
O
Essential elements:Al, H, O, P
All elements listed in formula:Al, H, O, P
Common Impurities:Cu,Pb

Relationship of Evansite to other Species

Common Associates:
LimoniteAllophane
Related Minerals - Nickel-Strunz Grouping):

- +
8.DF.05Hotsonite
Al
 
11
[(OH)
 
21
|(SO
 
4
)
 
3
|(PO
 
4
)
 
2
] · 16H
 
2
O
8.DF.10Bolivarite
Al
 
2
[(OH)
 
3
|PO
 
4
] · 4-5H
 
2
O
8.DF.10Liskeardite
(Al,Fe
3+
 
)
 
3
[(OH)
 
6
|AsO
 
4
] · 5H
 
2
O
8.DF.10Rosièresite
(Pb, Cu, Al, P, O, H)
8.DF.15Rusakovite
(Fe
3+
 
,Al)
 
5
[(OH)
 
9
|(VO
 
4
,PO
 
4
)
 
2
] · 3H
 
2
O
8.DF.20Liroconite
Cu
 
2
Al[(OH)
 
4
|AsO
 
4
] · 4H
 
2
O
8.DF.25Sieleckiite
Cu
 
3
Al
 
4
[(OH)
 
6
|PO
 
4
]
 
2
 · 2H
 
2
O
8.DF.30Chalcophyllite
Cu
 
18
Al
 
2
[(OH)
 
9
|SO
 
4
|AsO
 
4
]
 
3
 · 33H
 
2
O
8.DF.35Parnauite
Cu
 
9
[(OH)
 
10
|SO
 
4
|(AsO
 
4
)
 
2
] · 7H
 
2
O
8.DF.40Gladiusite
Fe
 
2
(Fe,Mg)
 
4
(PO
 
4
)(OH)
 
11
(H
 
2
O)
Related Minerals - Hey's Index Grouping:

- +
19.7.1Berlinite
Al[PO
 
4
]
19.7.2Augelite
Al
 
2
[(OH)
 
3
|PO
 
4
]
19.7.3Trolleite
Al
 
4
[OH|PO
 
4
]
 
3
19.7.4Senegalite
Al
 
2
[(OH)
 
3
|PO
 
4
] · H
 
2
O
19.7.5Variscite
AlPO
 
4
·2H
 
2
O
19.7.6Metavariscite
AlPO
 
4
·2H
 
2
O
19.7.7Bolivarite
Al
 
2
[(OH)
 
3
|PO
 
4
] · 4-5H
 
2
O
19.7.8Wavellite
Al
 
3
[(OH,F)
 
3
|(PO
 
4
)
 
2
] · 5H
 
2
O
19.7.10Vantasselite
Al
 
4
[OH|PO
 
4
]
 
3
 · 9H
 
2
O
19.7.11Kingite
Al
 
3
[(OH)
 
3
|(PO
 
4
)
 
2
] · 9H
 
2
O
19.7.12Vashegyite
Al
 
11
[(OH)
 
6
|(PO
 
4
)
 
9
] · 38H
 
2
O

Other Names for Evansite

Other Languages:
German:Evansit
Spanish:Evansita

Other Information

Other Information:Readily soluble in acids.
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Evansite

Reference List:Forbes (1864) Philosophical Magazine and Journal of Science: 28: 341.

Smith (1893) Proceedings of the Royal Society of New South Wales: 27: 382.

Kovár (1896) Chemický vyzkum pti Moravských Mineralû. Česka Akademie Císaře Frantiska Josefa &c. Rozpravy Třída II. Roč. v. čis. 15 8th.

Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig (1899): 31: 524 (Kovár cited therein)

Schaller (1907) American Journal of Science: 24: 155.

Iglesias (1927) Bol. Soc. espan. hist. nat.: 27: 319.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 923-924.

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    Localities for Evansite

    Hide Locality List
    The 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.
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    (TL) indicates type locality. ? 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
     
    • Tasmania
      • Zeehan district
        • Zeehan
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923.
    Austria
     
    • Salzburg
      • Schwarzach
        • Lend
    		R. Exel: Die Mineralien und Erzlagerstätten Österreichs, 1993
    Belgium
     
    • Liège Province
      • Visé
    		Collection Arliguie M
    No reference listed
    Bolivia
     
    • Potosí Department
      • Bustillos Province
        • Llallagua
    		[MinRec 32:474]
    China
     
    • Hunan Province
    		Hunan 230 Laboratory, Hunan 305 Geological Team, Wuhan Geological Institution X-ray Laboratory (1976): Acta Geologica Sinica 50(2), 203-204.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Pardubice Region
    		Prachař, I.: Současný stav výskytu nerostů ve Chvaleticích. Acta musei Reginaehradecensis, série A: vědy přírodní, 1981, roč. XVI., s. 99-102.
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923.
    • Moravia (Mähren; Maehren)
      • Vysočina Region
        • Bystřice nad Pernštejnem
    		Kovár (1896) Chemický vyzkum pti Moravských Mineralû. Česka Akademie Císaře Frantiska Josefa &c. Rozpravy Třída II. Roč. v. čis. 15 8th.; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923.
        • Štěpánov nad Svratkou
    		Velebil, D., Kráčmar, L.: Ložisko Borovec u Štěpánova (štěpánovský revír). Minerál, 2002, roč. 10, č. 3, s. 163-181.
    France
     
    • Champagne-Ardenne
      • Marne
        • Epernay
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923.
    • Midi-Pyrénées
      • Tarn
        • Réalmont
          • Peyrebrune
    		Bernadi G. (1992), Peyrebrune, Carrière du Rivet (Tarn), Le Cahier des Micromonteurs, n°1, pp: 3-10
    • Pays de Loire
      • Loire-Atlantique
        • Saint-Aubin-des-Châteaux
    		Moëlo, Y., Gloaguen, E., Lulzac, Y. (2006): III. Les minéraux de Saint-Aubin. Le Cahier des Micromonteurs, 1/2006, 13-25
    Germany
     
    • North Rhine-Westphalia
      • Wuppertal
        • Aprath castle
    		Emser Hefte 1988(4), 35-40
    Japan
     
    • Kyushu Island
      • Miyazaki prefecture
        • Hinokage-cho
    		Akira Kato (1973) Sakurai Koubutsu Hyohon, 49.
    Kazakhstan
     
    • Zhambyl Oblysy (Dzhambul [Drambul; Dzambul; Jambyl] Oblast')
    Madagascar
     
    • Toamasina (Tamatave) Province
      • Eastern Region
        • Vatomandry Department
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923.
    Portugal
     
    • Guarda District
      • Gouveia
        • Folgosinho
    		Luis Martins collection
    • Viana do Castelo District
      • Caminha
    Romania
     
    • Alba Co.
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923.
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923.
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923.
    Russia
     
    • Northern Caucasus Region
      • Stavropol'skiy Kray
        • Pyatigorsk
          • Beshtau U Deposit
    Slovakia
     
    • Banská Bystrica Region
      • Starohorské Mts
        • Špania Dolina ore belt
    		Koděra, M., a kol.: Topografická mineralogie Slovenska. Sv. 3 Sed-Ž, Bratislava, Veda 1990, s. 1247-1256.
      • Western Slovenské Rudohorie Mts
    		Novák, F. et al. (2003): Koninckit, evansit, vashegyit a volborthit z Kocihy u Rimavské Soboty. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, roč. 11, s. 159-166.
        • Ľubietová (Libetbánya; Libethen) ore belt
    		Pauliš,P.,Ďuďa,R.,2002: Nejzajímavejší mineralogická naletište Slovenska. Kuttna,K.Hora, 136p
    Pauliš,P.,Ďuďa,R.,2002: Nejzajímavejší mineralogická naletište Slovenska. Kuttna,K.Hora, 136p
        • Sirk (Szirk)
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923; Canadian Mineralogist (1995), 33, 59-65
    • Košice Region
      • Eastern Slovenské Rudohorie Mts
        • Betliar
    		Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
        • Dobšiná (Dobschau) Mining District
    		Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
    Duda, Rejl, Slivka: "Mineralien", 1991
        • Ochtiná
    		Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
    South Africa
    Minerals of South Africa
    Minerals of South Africa
    Spain
     
    • Catalonia
      • Barcelona
        • Barcelonès
          • Barcelona
    		No reference listed
        • Vallès Oriental
          • Montcada i Reixac
    		Mineralogistes de Catalunya (1997), VII (1): 34-55
    • Galicia
      • Pontevedra
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923.
    • Navarre (Navarra; Nafarroa)
      • Esteribar
        • Eugui
    		Calvo, M. and Viñals, J. (2003). El yacimiento de magnesita de Eugui (Navarra). Revista de Minerales, 2 (4) 6-21
    UK
     
    • England
      • Cheshire
        • Macclesfield
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923.
    USA
     
    • Alabama
      • Shelby Co.
        • Coosa coal field
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923; Mineralogy of Alabama, Geological Survey of Alabama Bull.120.
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923; Mineralogy of Alabama, Geological Survey of Alabama Bull.120..
    • Arkansas
      • Garland Co.
        • Wilson Springs (Potash Sulfur Springs)
          • Union Carbide Mine
    		R&M 70:3 pp 154-170
    • Idaho
      • Custer Co.
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 923; Rocks & Minerals (1995): 70(4): 242-263.
    • Maine
      • Oxford Co.
        • Paris
    • Nevada
      • Humboldt Co.
        • Potosi District
    		Min Rec 10:4 pp219-221
    • Wisconsin
      • Dodge Co.
        • Iron Ridge District (Neda Iron District)
    		Rocks & Min. Vol. 73 (1998)
    Mineral and/or Locality
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