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Lammerite-β

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Big Photo

Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia
© Brent Thorne 2011




Formula:
Cu
 
3
(AsO
 
4
)
 
2
System:Monoclinic
Name:Named for the polymorphic relation to lammerite.
Dimorph of:Lammerite


Known as a synthetic compound.

Classification of Lammerite-β

IMA status:Approved 2009
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 8th edition ID:38.3.8.2

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
3 : (AB)3(XO4)2
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Type Occurrence of Lammerite-β

Type Locality:Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia

Crystallography of Lammerite-β

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Cell Parameters:a = 6.306(1) Å, b = 8.643(1) Å, c = 11.310(1) Å
β = 92.26(1)°
Ratio:a:b:c = 0.73 : 1 : 1.309
Unit Cell Volume:V 615.95 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
4.41 (20)
4.02 (30)
3.39 (50)
2.79 (100)
2.34 (20)
2.13 (20)
2.02 (20)
1.89 (20)
1.64 (20)

Chemical Properties of Lammerite-β

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

Relationship of Lammerite-β 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
3+
 
,Mn
3+
 
)
 
2
(PO
 
4
)
 
2
8.AB.10Triphylite
LiFe
2+
 
PO
 
4
8.AB.10Karenwebberite
Na(Fe
2+
 
,Mn
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.30Lammerite
Cu
 
3
(AsO
 
4
)
 
2
8.AB.35Mcbirneyite
Cu
 
3
(VO
 
4
)
 
2
8.AB.35Stranskiite
Zn
 
2
Cu(AsO
 
4
)
 
2
8.AB.35Pseudolyonsite
Cu
 
3
(VO
 
4
)
 
2
8.AB.40Lyonsite
Cu
 
3
Fe
 
4
(VO
 
4
)
 
6

Other Names for Lammerite-β

Synonyms:
IMA2009-002
Other Languages:

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-β

Reference List:

- +
Starova G. L., Vergasova L. P., Filatov S. K., Britvin S. N.,. Ananyev V. V. (2011): Lammerite-β, Cu3(AsO4)2 - a new mineral from fumarolcs of the Great Tolbachic eruption (Kamchatka, Russia). Zapiski RMO (Proceedings of the Russian Mineralogical Society) 140, 46-51 (in Russian).

Internet Links for Lammerite-β

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    • Localities for Lammerite-β

    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.
    Russia
     
    • Far-Eastern Region
      • Kamchatka Oblast'
    		IMA Approvals - April 2009
    IMA approvals-April 2009
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