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Serrabrancaite

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

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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, 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
 
4
)
 
2
(HPO
 
4
)
 
2
 · 4H
 
2
O
8.CB.10Sainfeldite
CaCa
 
2
Ca
 
2
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 4H
 
2
O
8.CB.10Villyaellenite
MnMn
 
2
Ca
 
2
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 4H
 
2
O
8.CB.10UM1997-09-AsO:CaHMgZn
(Mg,Ca,Zn)
 
5
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 4H
 
2
O
8.CB.10Nyholmite
Cd
 
3
Zn
 
2
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 4H
 
2
O
8.CB.10Miguelromeroite
MnMn
 
2
Mn
 
2
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 4H
 
2
O
8.CB.15Fluckite
CaMn
2+
 
(HAsO
 
4
)
 
2
 · 2H
 
2
O
8.CB.15Krautite
Mn(HAsO
 
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(HAsO
 
4
) · H
 
2
O
8.CB.35Schubnelite
Fe
3+
 
VO
 
4
 · H
 
2
O
8.CB.40Radovanite
Cu
 
2
Fe
3+
 
(AsO
 
4
)(HAs
3+
 
O
 
3
)
 
2
 · H
 
2
O
8.CB.45Kazakhstanite
Fe
3+
5
V
4+
3
V
5+
12
O
 
39
(OH)
 
9
 · 9H
 
2
O
8.CB.50Kolovratite
Ni
 
x
Zn
 
y
(VO
 
4
)
 
0.67(x+y)
 · nH
 
2
O
8.CB.55Irhtemite
Ca
 
4
Mg(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 4H
 
2
O
8.CB.60Burgessite
Co
 
2
(HAsO
 
4
)
 
2
 · 5H
 
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
  • American Mineralogist Crystal Structure Database
  • Serrabrancaite details from Handbook of Mineralogy (PDF)
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    • Localities for Serrabrancaite

    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.
    Brazil
     
    • Paraíba
      • Borborema mineral province
        • Pedra Lavrada
    		Amer.Min.(2000) 85, 847-849
    Rwanda
     
    • Western Province
      • Gatumba District
    		Lapis 35 (3) (2010) p. 12;
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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