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Reppiaite

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Valgraveglia Mine (Gambatesa Mine), Reppia, Graveglia Valley, Ne, Genova Province, Liguria, Italy
© Knut Eldjarn

Show Reppiaite Photos (2)
Formula:
Mn
2+
5
[(OH)
 
2
|VO
 
4
]
 
2
System:MonoclinicColour:Orange-red
Hardness:3 - 3½
Name:Named after its discovery locality.
This page provides mineralogical data about Reppiaite.

Classification of Reppiaite

IMA status:Approved 1991
Strunz 8th edition ID:7/B.11-80
Nickel-Strunz 10th (pending) edition ID:8.BD.20

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
D : With only medium-sized cations, (OH, etc.):RO4= 2:1
Dana 8th edition ID:41.4.8.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
4 : (AB)5(XO4)2Zq
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Type Occurrence of Reppiaite

Type Locality:Valgraveglia Mine (Gambatesa Mine), Reppia, Graveglia Valley, Ne, Genova Province, Liguria, Italy
Year of Discovery:1992

Physical Properties of Reppiaite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Orange-red
Streak:Orange-red
Hardness (Mohs):3 - 3½

Crystallography of Reppiaite

Crystal System:Monoclinic
Cell Parameters:a = 9.6Å, b = 9.55Å, c = 5.39Å
β = 98.45°
Ratio:a:b:c = 1.005 : 1 : 0.564
Unit Cell Volume:V 488.79 ų (Calculated from Unit Cell)

Optical Data of Reppiaite

Type:Biaxial (-)
RI values: nα = 1.803 nγ = 1.810
Maximum Birefringence:δ = 0.007

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:relatively strong

Chemical Properties of Reppiaite

Formula:
Mn
2+
5
[(OH)
 
2
|VO
 
4
]
 
2
Essential elements:H, Mn, O, V
All elements listed in formula:H, Mn, O, V
Common Impurities:As

Relationship of Reppiaite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.BD.05Cornwallite
Cu
 
5
[(OH)
 
2
|AsO
 
4
]
 
2
8.BD.05Pseudomalachite
Cu
 
5
[(OH)
 
2
|PO
 
4
]
 
2
8.BD.05Reichenbachite
Cu
 
5
[(OH)
 
2
|PO
 
4
]
 
2
8.BD.10Arsenoclasite
Mn
2+
5
[(OH)
 
2
|AsO
 
4
]
 
2
8.BD.10Gatehouseite
Mn
2+
5
[(OH)
 
2
|PO
 
4
]
 
2
8.BD.15Parwelite
Mn
 
10
Sb
 
2
As
 
2
Si
 
2
O
 
24
8.BD.25Ludjibaite
Cu
 
5
[(OH)
 
2
|PO
 
4
]
 
2
8.BD.30Cornubite
Cu
 
5
[(OH)
 
2
|AsO
 
4
]
 
2

Other Names for Reppiaite

Synonyms:
IMA1991-007
Other Languages:
German:Reppiait
Russian:Реппиаит
Spanish:Reppiaita

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 Reppiaite

Reference List:Basso, R.; Lucchetti, G.; Zefiro, L.; Palenzona, A. (1992): Reppiaite, Mn5(OH)4(VO4)2, a new mineral from Val Graveglia (Northern Apennines, Italy). Zeitschrift für Kristallographie: 201, 223-234.

New Minerals (1997), New Minerals 1990-1994.

Internet Links for Reppiaite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Reppiaite in the Natural History Museum (London) online catalogue
  • Reppiaite details from Handbook of Mineralogy (PDF)
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    Localities for Reppiaite

    (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.
    Italy
     
    • Liguria
      • Genova Province
        • Ne
          • Graveglia Valley
            • Reppia
    		[Zeits.Kristallogr.(1992) 201, 223-234; MinRec 32:354]
    Switzerland
     
    • Wallis (Valais)
      • Turtmann Valley
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 266-267, 347.
    Mineral and/or Locality
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