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Aerugite

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Formula:
Ni8.5(AsO4)2As5+O8
System:
Monoclinic
Colour:
Dark grass-green, ...
Hardness:
4
Name:
Named by Gilbert-Joseph Adam in 1869 from 'aerugo', which means 'copper rust', alluding to its appearance.
This page provides mineralogical data about Aerugite.

Classification of Aerugite

Approved
8.BC.15

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
C : With only medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
41.3.11.

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
3 : (AB)3(XO4)Zq
20.10.7

20 : Arsenates (also arsenates with phosphate, but without other anions)
10 : Arsenates of Co and Ni
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Type Occurrence of Aerugite

Place of Conservation of Type Material:
Natural History Museum, London, England, 32590 and 1907,103.
Year of Discovery:
1858
Geological Setting of Type Material:
Oxidised vein in a nickel arsenic deposit.
Associated Minerals at Type Locality:

Occurrences of Aerugite

Geological Setting:
A rare secondary mineral in hydrothermal Ni–As–U ore deposits.

Physical Properties of Aerugite

Sub-Adamantine, Sub-Vitreous, Resinous
Diaphaneity (Transparency):
Transparent
Colour:
Dark grass-green, blue-green, pale brown.
Streak:
Pale green, pale blue-green.
Hardness (Mohs):
4
Tenacity:
Brittle
Cleavage:
None Observed
Density:
5.85 g/cm3 (Measured)    5.772 g/cm3 (Calculated)

Crystallography of Aerugite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Morphology:
Fine-grained crystalline, massive, as crusts, to 2 mm thick.
Comment:
Formerly reported as isometric.
X-Ray Powder Diffraction Data:
d-spacingIntensity
9.19 (60)
5.05 (60)
3.76 (80)
2.86 (60)
2.49 (60)
2.33 (70)
1.06 (100)
1.485 (30)
Comments:
ICDD 18-873

Chemical Properties of Aerugite

Formula:
Ni8.5(AsO4)2As5+O8
Essential elements:
All elements listed in formula:

Relationship of Aerugite to other Species

Common Associates:
8.BC.05AngelelliteFe43+(AsO4)2O3
8.BC.10FrondeliteMn2+Fe43+(PO4)3(OH)5
8.BC.10RockbridgeiteFe2+Fe43+(PO4)3(OH)5
8.BC.10PlimeriteZnFe43+(PO4)3(OH)5
20.10.1ErythriteCo3(AsO4)2 · 8H2O
20.10.2CobaltaustiniteCaCo(AsO4)(OH)
20.10.3RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2O
20.10.4β-RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2O
20.10.5WendwilsoniteCa2Mg(AsO4)2 · 2H2O
20.10.6Cobaltkoritnigite(Co,Zn)(HAsO4) · H2O
20.10.8XanthiositeNi3(AsO4)2
20.10.9AnnabergiteNi3(AsO4)2 · 8H2O
20.10.10Smolyaninovite(Co,Ni,Mg,Ca)3(Fe3+,Al)2(AsO4)4 · 11H2O
20.10.11NickelaustiniteCa(Ni,Zn)(AsO4)(OH)

Other Names for Aerugite

Name in Other Languages:
Dutch:Aerugiet
French:Aerugite
German:Aerugit
Italian:Aerugite
Simplified Chinese:块砷镍矿
Traditional Chinese:塊砷鎳礦

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 Aerugite

Reference List:
Bergemann C. (1858) Ueber einige Nickelerze.- Journal für praktische Chemie [1] 75, 239-244.

Mineralogical Magazine (1965) 35, 72 [American Mineralogist (1965): 50: 2108 (abstract)]

Mineralogical Abstracts: 42(1): 23.

Fleet, M.E. and Barbier, J. (1989) Structure of aerugite (Ni8.5As3O16) and interrelated arsenate and germanate structural series. Acta Crystallographica: B45: 201-205.

European Journal of Mineralogy (2001) 13, 167

Internet Links for Aerugite

Localities for Aerugite

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.
Germany (TL)
 
  • Saxony
    • Erzgebirge
      • Johanngeorgenstadt District
[C. Bergemann (1858): Ueber einige Nickelerze.- Journal für praktische Chemie [1] 75, 239-244.; Clark, 1993 - "Hey's Mineral Index, 3rd Edition"]
Thalheim, K. & Kaden, M. (2006): Die Sammlung Sachsen - Interessante Neubestimmungen. Pp. 154-155 in: Lange, J. M. & Kühne, E., Eds. (2006): Das Museum für Mineralogie und Geologie in den Staatlichen Naturhistorischen Sammlungen Dresden. Von der kurfürstlichen Kunstkammer zum staatlichen Forschungsmuseum. Museum für Mineralogie und Geologie, Staatliche Naturhistorische Sammlungen Dresden, Dresden, Germany, 200 pp.
        • Lauta
Hajek, W. (2010): Kristallwelten Marienberg. Weise Verlag, München.
UK
 
  • England
    • Cornwall
      • St Austell District
        • St Stephen-in-Brannel
          • St Stephen
Davis, R.J., Hey, M.H., and Kingsbury, A.W.G. (1965): Mineralogical Magazine 35, 72-83
Mineral and/or Locality  
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