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Joosteite

Formula:
Mn
2+
 
(Mn
3+
 
,Fe
3+
 
)[PO
 
4
]O
System:MonoclinicColour:grey with a brownish ...
Hardness:4
Name:Named for Mrs. Charlotte Jooste, Karibib, Namibia, for her support of pegmatite research in Central Namibia


Triplite/Triploidite Group
Mn3+ analogue of stanekite

Classification of Joosteite

IMA status:Approved 2005
Strunz 8th edition ID:7/B.03-62
Strunz 9th edition ID:8.BB.15
Nickel-Strunz 10th (pending) edition ID:8.BB.15

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
Dana 8th edition ID:41.6.3.5

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq
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Type Occurrence of Joosteite

Type Locality:Helikon II pegmatite, Okongava-Ost farm, Karibib District, Erongo Region, Namibia
General Appearance of Type Material:irregular small aggregates up to 3mm in length
Place of Conservation of Type Material:Universitat Stuttgart, Germany; Museum d'Histoire Naturelle de Toulouse, France, and the Department de Mineralogia y Petrologia, Universidad del Pais Vasco, Bilbao, Spain
Geological Setting of type material:granitic rare element pegmatite

Physical Properties of Joosteite

Lustre:Sub-Metallic
Diaphaneity (Transparency):Opaque
Comment:weak
Colour:grey with a brownish tinge, dark brown in thin section
Hardness (Mohs):4
Tenacity:Brittle
Cleavage:None Observed
Density (calculated):4.13 g/cm3

Crystallography of Joosteite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Cell Parameters:a = 11.888(2) Å, b = 6.409(1) Å, c = 9.804(2) Å
β = 106.17(3)°
Ratio:a:b:c = 1.855 : 1 : 1.53
Unit Cell Volume:V 717.3 ų
Z:8
Twinning:not observed
X-Ray Powder Diffraction:
d-spacingIntensity
2.819 (100)
3.077 (80)
3.209 (60)
2.082 (50)
1.787 (50)

Chemical Properties of Joosteite

Formula:
Mn
2+
 
(Mn
3+
 
,Fe
3+
 
)[PO
 
4
]O
Essential elements:
All elements listed in formula:Fe, Mn, O, P

Relationship of Joosteite to other Species

Related Minerals - Nickel-Strunz Grouping):
8.BB.05Amblygonite
(Li,Na)Al[(F,OH)|PO
 
4
]
8.BB.05Montebrasite
LiAl[(OH,F)|PO
 
4
]
8.BB.05Tavorite
LiFe
3+
 
[OH|PO
 
4
]
8.BB.10Triplite
(Mn
2+
 
,Fe
2+
 
)
 
2
[(F,OH)|PO
 
4
]
8.BB.10Zwieselite
(Fe
2+
 
,Mn
2+
 
)
 
2
[F|PO
 
4
]
8.BB.10IMA2004-009
Mg
 
2
[PO
 
4
](OH)
8.BB.15Sarkinite
Mn
2+
2
[OH|AsO
 
4
]
8.BB.15Triploidite
(Mn
2+
 
,Fe
2+
 
)
 
2
[OH|PO
 
4
]
8.BB.15Wagnerite
(Mg,Fe
2+
 
)
 
2
[F|PO
 
4
]
8.BB.15Wolfeite
(Fe
2+
 
,Mn
2+
 
)
 
2
[OH|PO
 
4
]
8.BB.15Stanĕkite
Fe
3+
 
(Mn
2+
 
,Fe
2+
 
,Mg)[O|PO
 
4
]
8.BB.20Holtedahlite
Mg
 
2
[OH|PO
 
4
]
8.BB.20Satterlyite
(Fe
2+
 
,Mg,Fe
3+
 
)
 
2
[(OH,O)|PO
 
4
]
8.BB.25Althausite
Mg
 
2
[(OH,F)|PO
 
4
]
8.BB.30Adamite
Zn
 
2
(AsO
 
4
)(OH)
8.BB.30Eveite
Mn
2+
2
[OH|AsO
 
4
]
8.BB.30Libethenite
Cu
 
2
[OH|PO
 
4
]
8.BB.30Olivenite
Cu
 
2
[OH|AsO
 
4
]
8.BB.30Zincolibethenite
CuZnPO
 
4
OH
8.BB.30Zincolivenite
CuZn(AsO
 
4
)(OH)
8.BB.35Paradamite
Zn
 
2
[OH|AsO
 
4
]
8.BB.35Tarbuttite
Zn
 
2
[OH|PO
 
4
]
8.BB.40Barbosalite
Fe
2+
 
Fe
3+
2
[OH|PO
 
4
]
 
2
8.BB.40Hentschelite
CuFe
3+
2
[OH|PO
 
4
]
 
2
8.BB.40Lazulite
(Mg,Fe
2+
 
)Al
 
2
[OH|PO
 
4
]
 
2
8.BB.40Scorzalite
(Fe
2+
 
,Mg)Al
 
2
[OH|PO
 
4
]
 
2
8.BB.40Wilhelmkleinite
ZnFe
3+
2
[OH|AsO
 
4
]
 
2
8.BB.45Trolleite
Al
 
4
[OH|PO
 
4
]
 
3
8.BB.50Namibite
Cu(BiO)
 
2
(VO
 
4
)(OH)
8.BB.55Phosphoellenbergerite
Mg
 
14
[(OH)
 
6
|(HPO
 
4
,CO
 
3
)
 
2
|(PO
 
4
)
 
6
]
8.BB.60Urusovite
Cu[AlAsO
 
5
]
8.BB.65Theoparacelsite
Cu
 
3
[(OH)
 
2
|As
 
2
O
 
7
]
8.BB.70Turanite
Cu
 
5
[(OH)
 
2
|VO
 
4
]
 
2
8.BB.75Stoiberite
Cu
 
5
[O
 
2
|(VO
 
4
)
 
2
]
8.BB.80Fingerite
Cu
 
11
[O
 
2
|(VO
 
4
)
 
6
]
8.BB.85Averievite
Cu
 
6
[O
 
2
|Cl
 
2
|(VO
 
4
)
 
2
]
8.BB.90Lipscombite
(Fe
2+
 
,Mn
2+
 
)Fe
3+
2
[OH|PO
 
4
]
 
2
8.BB.90Richellite
Ca
 
3
Fe
3+
10
[(OH,F)
 
3
|(PO
 
4
)
 
2
]
 
4
 · nH
 
2
O (not confirmed)
8.BB.90Zinclipscombite
ZnFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2

Other Names for Joosteite

Synonyms:
IMA 2005-013

Other Information

Fluorescence in UV light:no fluorescence
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 Joosteite

Reference List:Keller, P, Fontan, F., Roldan, F. V., & P.de Parseval,:"Joosteite, Mn2+(Mn3+, Fe3+)(PO4)O: a new phosphate mineral from the Helikon II Mine, Karibib, Namibia" : Neues Jahrbuch für Mineralogie,Abhandlungen, 183(2), 197-201 (2007)

Internet Links for Joosteite

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  • Raman and XRD data at RRUFF project
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    Localities for Joosteite

    (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.
    Namibia
     
    • Erongo Region
      • Karibib District
        • Okongava-Ost farm
    		Keller, P., et al. (2007): NJMA 183,197-201(2007)
    Mineral and/or Locality
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