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Lammerite

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Pulacayo Mine (Huanchaca mine), Huanchaca, Quijarro Province, Potosí Department, Bolivia

Show Lammerite Photos (19)
Formula:
Cu
 
3
[AsO
 
4
]
 
2
System:MonoclinicColour:Dark green
Hardness:3 - 4
This page provides mineralogical data about Lammerite.

Classification of Lammerite

IMA status:Approved
Strunz 8th edition ID:7/A.09-10
Nickel-Strunz 10th (pending) edition ID:8.AB.30

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
Dana 7th edition ID:38.3.8.1
Dana 8th edition ID:38.3.9.1

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
3 : (AB)3(XO4)2
Hey's CIM Ref.:20.1.1

20 : Arsenates (also arsenates with phosphate, but without other anions)
1 : Arsenates of Cu
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Type Occurrence of Lammerite

Type Locality:Laurani Mine, Aroma Province, La Paz Department, Bolivia
Year of Discovery:1981

Physical Properties of Lammerite

Diaphaneity (Transparency):Transparent
Colour:Dark green
Streak:Pale green
Hardness (Mohs):3 - 4
Density (measured):5.18 g/cm3

Crystallography of Lammerite

Crystal System:Monoclinic
Cell Parameters:a = 5.39Å, b = 11.64Å, c = 5.07Å
β = 111.73°
Ratio:a:b:c = 0.463 : 1 : 0.436
Unit Cell Volume:V 295.49 ų (Calculated from Unit Cell)

Optical Data of Lammerite

Type:Biaxial (+)
Dispersion:r > v extreme

Chemical Properties of Lammerite

Formula:
Cu
 
3
[AsO
 
4
]
 
2
Essential elements:As, Cu, O
All elements listed in formula:As, Cu, O

Relationship of Lammerite to other Species

Related Minerals - Nickel-Strunz Grouping):
8.AB.05Farringtonite
Mg
 
3
[PO
 
4
]
 
2
8.AB.10Ferrisicklerite
(Fe
3+
 
,LiMn
2+
 
)[PO
 
4
]
8.AB.10Heterosite
(Fe
3+
 
,Mn
3+
 
)[PO
 
4
]
8.AB.10Lithiophilite
LiMn
2+
 
[PO
 
4
]
8.AB.10Natrophilite
NaMn
2+
 
[PO
 
4
]
8.AB.10Purpurite
(Mn
3+
 
,Fe
3+
 
)[PO
 
4
]
8.AB.10Sicklerite
(LiMn
2+
 
,Fe
3+
 
)[PO
 
4
]
8.AB.10Simferite
Li(Mg,Fe
2+
 
,Mn
2+
 
)[PO
 
4
]
8.AB.10Triphylite
LiFe
2+
 
[PO
 
4
]
8.AB.15Sarcopside
(Fe
2+
 
,Mn
2+
 
,Mg)
 
3
[PO
 
4
]
 
2
8.AB.15Chopinite
(Mg,Fe
2+
 
)
 
3
[PO
 
4
]
 
2
8.AB.20Beusite
(Mn
2+
 
,Fe
2+
 
,Ca,Mg)
 
3
[PO
 
4
]
 
2
8.AB.20Graftonite
(Fe
2+
 
,Mn
2+
 
,Ca)
 
3
[PO
 
4
]
 
2
8.AB.25Xanthiosite
Ni
 
3
[AsO
 
4
]
 
2
8.AB.35Mcbirneyite
Cu
 
3
(VO
 
4
)
 
2
8.AB.35Stranskiite
(Zn,Cu)
 
3
[AsO
 
4
]
 
2
8.AB.40Lyonsite
Cu
 
3
Fe
 
4
(VO
 
4
)
 
6
Related Minerals - Hey's Index Grouping:
20.1.2Olivenite
Cu
 
2
[OH|AsO
 
4
]
20.1.3Clinoclase
Cu
 
3
[(OH)
 
3
|AsO
 
4
]
20.1.4Cornwallite
Cu
 
5
[(OH)
 
2
|AsO
 
4
]
 
2
20.1.5Cornubite
Cu
 
5
[(OH)
 
2
|AsO
 
4
]
 
2
20.1.6Chlorotile (of Frenzel)
20.1.7Geminite
Cu
 
2
[As
 
2
O
 
7
] · 3H
 
2
O
20.1.8Euchroite
Cu
 
2
[OH|AsO
 
4
] · 3H
 
2
O
20.1.9Strashimirite
Cu
 
8
[OH|AsO
 
4
]
 
4
 · 5H
 
2
O
20.1.10Arhbarite
Cu
 
2
Mg[(OH)
 
3
|AsO
 
4
]
20.1.11Lindackerite
CuCu
 
4
[HAsO
 
4
|AsO
 
4
]
 
2
 · 8-9H
 
2
O
20.1.12Conichalcite
CaCu[OH|AsO
 
4
]
20.1.13Liroconite
Cu
 
2
Al[(OH)
 
4
|AsO
 
4
] · 4H
 
2
O
20.1.14Ceruleite
Cu
 
2
Al
 
7
[(OH)
 
13
|(AsO
 
4
)
 
4
] · 11.5H
 
2
O
20.1.15Chenevixite
Cu
 
2
Fe
3+
2
[(OH)
 
2
|AsO
 
4
]
 
2
20.1.16Arthurite
CuFe
3+
2
[(OH,O)|(AsO
 
4
,PO
 
4
,SO
 
4
)]
 
2
 · 4H
 
2
O

Other Names for Lammerite

Synonyms:
IMA1980-016
German names:
Lammerit
Russian names:
Ламмерит
Spanish names:
Lammerita

Other Information

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 Lammerite

Reference List:American Mineralogist (1982): 67: 415.

American Mineralogist (1986): 71: 206-209.

Internet Links for Lammerite

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    Localities for Lammerite

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    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.
    Bolivia
     
    • La Paz Department
      • Aroma Province
    		Tschermaks Min.Petr.Mitt. (1981) 28, 157-164
    • Potosí Department
      • Quijarro Province
        • Huanchaca
    		W. Stoll collection (gift from Franz Lammer)
    Chile
     
    • Antofagasta Region
      • Antofagasta Province
        • Santa Catalina
          • Guanaco (Huanaco)
    		Ondruš, P., Veselovský, F, Sejkora, J., Skála, R., Pažout, R., Frýda, J., Gabašová, A., Vajdak, J. (2005): Lemanskiite, NaCaCu5(AsO4)4Cl•5H2O, a new mineral species from the Abundancia mine, Chile. Can. Mineral. 44, 523-531.
    U. Kolitsch collection (SXRD analysed); IMA submission #037-99, Dr. F. Veselovsky, Czech Geol. Survey
    Namibia
     
    • Otjikoto (Oshikoto) Region
      • Tsumeb
    		No reference listed
    Russia
     
    • Far-Eastern Region
      • Kamchatka Oblast'
        • Tolbachik volcano
          • Great Fissure (Main Fracture) eruption
            • Northern Breakthrough (North Breach)
    		Pavel M. Kartashov data
    Mineral and/or Locality
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