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Serrabrancaite

Pictures (3 Images total)

Serrabrancait
Views (File:
1623573041
): 371
Serrabrancait
dunkelolive Serrabrancait XX zum Teil v-förmig verwachsen auf Benyacarit/Paulkerrit und Strengit mit Bermanit; Fundort: Steinbruch Sítio do Castelo, Folgosinho, Gouveia, Guarda, Portugal; Bildbreite 0,6 mm; visuell bestimmt => Alves, P., Kampf, A.R. (2017)
Copyright: Josef 84,55; Contribution: Josef 84,55
Collection: Josef 84,55, Donator: Roland Fuchs
Location: Portugal/Guarda, Distrikt/Gouveia/Folgosinho/Steinbruch Folgosinho (Sítio do Castelo Mine)
Mineral: Serrabrancaite
Image: 1623573041
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Serrabrancait

dunkelolive Serrabrancait XX zum Teil v-förmig verwachsen auf Benyacarit/Paulkerrit und Strengit mit Bermanit; Fundort: Steinbruch Sítio do Castelo, Folgosinho, Gouveia, Guarda, Portugal; Bildbreit...
Collection: Josef 84,55
Copyright: Josef 84,55
Contribution: Josef 84,55 2021-06-13
Locality: Steinbruch Folgosinho (Sítio do Castelo Mine) / Folgosinho / Gouveia / Guarda, Distrikt / Portugal
Serrabrancait
Views (File:
1619893200
): 298
Serrabrancait
Eduardo claim, Consulheira Pena, Brasilien; Bildbreite 5 mm; Begleitmineralien: Bermanit, Phosphosiderit.
Copyright: Guy Heinen; Contribution: guyhein
Collection: Guy Heinen
Location: Brasilien/Südosten (Região Sudeste)/Minas Gerais/Doce-Tal/Conselheiro Pena/Eduardo Mine
Mineral: Bermanite, Phosphosiderite, Serrabrancaite
Image: 1619893200
License: Usage for Mineralienatlas project only
Serrabrancait

Eduardo claim, Consulheira Pena, Brasilien; Bildbreite 5 mm; Begleitmineralien: Bermanit, Phosphosiderit.
Collection: Guy Heinen
Copyright: Guy Heinen
Contribution: guyhein 2021-05-01
Locality: Eduardo Mine / Conselheiro Pena / Doce-Tal / Minas Gerais / Südosten (Região Sudeste) / Brasilien
Serrabrancait
Views (File:
1629483321
): 164
Serrabrancait
Eduardo Claim; Bb 7 mm; Begleiter: Phosphosiderit, Strengit, Bermanit.
Copyright: Guy Heinen; Contribution: guyhein
Collection: Guy Heinen
Location: Brasilien/Südosten (Região Sudeste)/Minas Gerais/Doce-Tal/Conselheiro Pena/Eduardo Mine
Mineral: Serrabrancaite
Image: 1629483321
License: Usage for Mineralienatlas project only
Serrabrancait

Eduardo Claim; Bb 7 mm; Begleiter: Phosphosiderit, Strengit, Bermanit.
Collection: Guy Heinen
Copyright: Guy Heinen
Contribution: guyhein 2021-08-20
Locality: Eduardo Mine / Conselheiro Pena / Doce-Tal / Minas Gerais / Südosten (Região Sudeste) / Brasilien

Collectors Summary

Color grünlichschwarz
Streak color olivgrün
Hardness (Mohs) 3.00 - 3.50
Cleavages keine
Fracture uneben
Solubility +++ Säuren
Crystal System monoklin, C2/c

Chemism

Chemical formula

Mn3+[PO4]·H2O

Chemical composition

Mangan, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 167.9248551 u; Number of atoms in the formula: 9

Info

Empirical formula:

Mn[PO4]·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.20

2

22.22

1.0079470

2.0158940
Oxygen

O

47.64

5

55.56

15.9994300

79.9971500
Phosphorus

P

18.45

1

11.11

30.9737612

30.9737612
Manganese

Mn

32.72

1

11.11

54.9380499

54.9380499

Analysis wt%

P2O5 : 42.72, Mn2O3 : 46.85, H2O : 9.80 (Ref: American Mineralogist 2000)

Strunz 9th edition incl. updates

8.CB.05

8: Phosphate, Arsenate, Vanadate
C: Phosphate ohne weitere Anionen, mit H2O
B: Mit ausschließlich mittelgroßen [Kationen], RO4:H2O = 1:1
05:Serrabrancait-Gruppe

Lapis Classification

VII/C.07-005

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
C: Wasserhaltige Phosphate, ohne fremde Anionen
7: Kleine und mittelgroße Kationen: Be und Al-Mn-Fe-Cu-Zn-Mg

Classification by Hölzel

8.CC.200

8: PHOSPHATES ARSENATES VANADATES
C: Phosphates (-Anions +Water)
C: Valency: 3,4 C medium
2: XO4/H2O=1/2, monoclinic Phosphosiderite-Group

Dana 8th edition

40.04.10.01

40: Hydrated Phosphates, etc
04: Hydrated Phosphates, etc where A+++ XO4 · x(H2O)
10: Phosphate analog of Kieserite (SO4) group (C2/c)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Kieserite group

Optical Properties

Color

grünlichschwarz

Streak color

olivgrün

max. Birefringence

0.040>

RI value α / ω / n

1.75

RI value β

1.79

RI value γ / ε

1.79>

Ri mean

1.780

2V angle

Biaxial (-) nd

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

15

Space Group

C2/c

Cell parameters a (Å)

6.914

Cell parameters b (Å)

7.468

Cell parameters c (Å)

7.364

Cell parameters a/b or c/a

0.926

Cell parameters c/b

0.986

Cell parameters α

90°

Cell parameters β

112.28

Cell parameters γ

90°

Z

4

Volume (ų)

351.844

X-Ray Powder Diffraction

4.856(10),
4.633(10),
3.503(100),
3.271(10),
2.957(10),
2.516(20),
2.104(10),
1.531(10)
XRD chart Serrabrancaite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

3.00 - 3.50

VHN (Hardness Vickers)

130 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.17 (gemessen)

3.17 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

uneben

Tenacity

spröde

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Brasilien/Nordosten (Região Nordeste)/Paraíba/Borborema/Pedra Lavrada/Serra-Branca-Pegmatit

Preface

Author (Name, Year)

Witzke & Wegner & Doering & Pöllmann & Schuckmann, 2000

References

American Mineralogist 85 (2000), 847

IMA group assignments

Other languages

German

Serrabrancait

English

Serrabrancaite

French

Serrabrancaite

Spanish

Serrabrancaíta

Russian

Серрабранкаит

CNMNC (IMA)-Number

IMA 1998-006

CNMNC symbol

Symbol

Sra

Locations with GPS information

IDs

GUSID (Global unique identifier short form) q6h8HmUwrU-bwcQv49ckNw
GUID (Global unique identifier) 1E7CA8AB-3065-4FAD-9BC1-C42FE3D72437
Database ID 3486