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Serrabrancaite

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Serra Branca pegmatite, Pedra Lavrada, Borborema mineral province, Paraíba, Northeast Region, Brazil

Formula:
MnPO
 
4
·H
 
2
O
System:MonoclinicColour:Dark brown to dark ...
Lustre:AdamantineHardness:3½
Name:Named after the type locality, the Serra Branca pegmatite, Pedra Lavrada, Paraíba, Northeast Region, Brazil.


Kieserite Group.

Classification of Serrabrancaite

IMA status:Approved
Strunz 8th edition ID:7/C.07-50
Nickel-Strunz 10th (pending) edition ID:8.CB.05

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
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Type Occurrence of Serrabrancaite

Type Locality:Serra Branca pegmatite, Pedra Lavrada, Borborema mineral province, Paraíba, Northeast Region, Brazil

Physical Properties of Serrabrancaite

Lustre:Adamantine
Diaphaneity (Transparency):Translucent
Colour:Dark brown to dark greenish black
Streak:Olive-green
Hardness (Mohs):3½

Crystallography of Serrabrancaite

Crystal System:Monoclinic

Optical Data of Serrabrancaite

Type:Biaxial
RI values: nα = 1.750 nβ = 1.790 nγ = 1.800
Maximum Birefringence:δ = 0.050

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r < v marked

Chemical Properties of Serrabrancaite

Formula:
MnPO
 
4
·H
 
2
O
Essential elements:H, Mn, O, P
All elements listed in formula:H, Mn, O, P

Relationship of Serrabrancaite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.CB.10Hureaulite
(Mn,Fe)
 
5
(PO
 
3
OH)
 
2
(PO
 
4
)
 
2
·4H
 
2
O
8.CB.10Sainfeldite
Ca
 
5
(AsO
 
3
OH)
 
2
(AsO
 
4
)
 
2
·4H
 
2
O
8.CB.10Villyaellenite
(Mn,Ca,Zn)
 
5
(AsO
 
3
OH)
 
2
(AsO
 
4
)
 
2
·4H
 
2
O
8.CB.10UM1997-09-AsO:CaHMgZn
(Mg,Ca,Zn)
 
5
(AsO
 
4
)
 
2
[AsO
 
3
(OH)]
 
2
·4H
 
2
O
8.CB.10IMA2008-047
Cd
 
3
Zn
 
2
(AsO
 
3
OH)
 
2
(AsO
 
4
)
 
2
·4H
 
2
O
8.CB.10Miguelromeroite
Mn
 
5
(AsO
 
3
OH)
 
2
(AsO
 
4
)
 
2
·4H
 
2
O
8.CB.15Fluckite
CaMnH
 
2
(AsO
 
4
)
 
2
·2H
 
2
O
8.CB.15Krautite
MnHAsO
 
4
·H
 
2
O
8.CB.20Cobaltkoritnigite
(Co,Zn)[HAsO
 
4
] · H
 
2
O
8.CB.20Koritnigite
Zn[HAsO
 
4
] · H
 
2
O
8.CB.25Yvonite
Cu[HAsO
 
4
] · 2H
 
2
O
8.CB.30Geminite
Cu
 
2
[As
 
2
O
 
7
] · 3H
 
2
O
8.CB.35Schubnelite
Fe
 
2-x
V
 
2
O
 
4
(OH)
 
4
8.CB.40Radovanite
Cu
 
2
Fe
3+
 
[(As
3+
 
O
 
2
(OH)]
 
2
[As
5+
 
O
 
4
]·H
 
2
O
8.CB.45Kazakhstanite
Fe
 
5
V
 
3
V
 
12
O
 
39
(OH)
 
9
·9H
 
2
O
8.CB.50Kolovratite
(Zn,Ni,Cu)
 
2-5
Al
 
4-6
(Si,V
4+
 
,V
5+
 
)
 
4
(O,OH)
 
20
·7.5H
 
2
O
8.CB.55Irhtemite
Ca
 
4
Mg[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 4H
 
2
O
8.CB.60Burgessite
Co
 
2
 (H
 
2
O)
 
4
[AsO
 
3
OH]
 
2
(H
 
2
O)}

Other Names for Serrabrancaite

Synonyms:
IMA1998-006
Other Languages:
German:Serrabrancait
Russian:Серрабранкаит
Spanish:Serrabrancaita

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 Serrabrancaite

Reference List:American Mineralogist (2000): 85: 847-849.

Inorganic Chemistry: 26: 3544-3547.

Internet Links for Serrabrancaite

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  • Raman and XRD data at RRUFF project
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  • Serrabrancaite details from Handbook of Mineralogy (PDF)
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    Localities for Serrabrancaite

    (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.
    Brazil
     
    • Northeast Region
      • Paraíba
        • Borborema mineral province
          • Pedra Lavrada
    		Amer.Min.(2000) 85, 847-849
    Mineral and/or Locality
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