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Schäferite

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Formula:
Ca
 
2
NaMg
 
2
(VO
 
4
)
 
3
System:IsometricColour:Orange-red
Lustre:VitreousHardness:5
Member of:Garnet Structural Group
Name:Named after Helmut Schäfer (b. 1931), amateur mineralogist of Mayen-Kürrenberg, specialist in the minerals of the Eifel volcanic area, who discovered the mineral

Classification of Schäferite

IMA status:Approved 1997
Strunz 8th edition ID:7/A.08-45
Nickel-Strunz 10th (pending) edition ID:8.AC.25

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
C : With medium-sized and large cations
Dana 7th edition ID:38.2.1.4
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Type Occurrence of Schäferite

Type Locality:Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany

Physical Properties of Schäferite

Lustre:Vitreous
Colour:Orange-red
Streak:Yellow
Hardness (Mohs):5

Crystallography of Schäferite

Crystal System:Isometric

Optical Data of Schäferite

Type:Isotropic

Chemical Properties of Schäferite

Formula:
Ca
 
2
NaMg
 
2
(VO
 
4
)
 
3
Simplified for copy/paste:Ca2NaMg2(VO4)3
Essential elements:Ca, Mg, Na, O, V
All elements listed in formula:Ca, Mg, Na, O, V

Relationship of Schäferite to other Species

Member of:Garnet Structural Group
Other Members of Group:

- +
Almandine
Fe
2+
3
Al
 
2
(SiO
 
4
)
 
3
Andradite
Ca
 
3
Fe
3+
2
(SiO
 
4
)
 
3
Berzeliite
NaCa
 
2
(Mg,Mn
2+
 
)
 
2
(AsO
 
4
)
 
3
Bitikleite
Ca
 
3
SbSn(AlO
 
4
)
 
3
Blythite
Mn
2+
3
Mn
3+
2
[SiO
 
4
]
 
3
Calderite
(Mn
2+
 
,Ca)
 
3
(Fe
3+
 
,Al)
 
2
(SiO
 
4
)
 
3
Dzhuluite
Ca
 
3
SbSnFe
3+
3
O
 
12
Elbrusite
Ca
 
3
U
6+
 
ZrFe
3+
2
Fe
2+
 
O
 
12
Goldmanite
Ca
 
3
V
3+
2
(SiO
 
4
)
 
3
Grossular
Ca
 
3
Al
 
2
(SiO
 
4
)
 
3
Henritermierite
Ca
 
3
(Mn
3+
 
,Al)
 
2
(SiO
 
4
)
 
2
(OH)
 
4
Hutcheonite
Ca
 
3
Ti
 
2
(SiAl
 
2
)O
 
12
Irinarassite
Ca
 
3
Sn
 
2
Al
 
2
SiO
 
12
Katoite
Ca
 
3
Al
 
2
(SiO
 
4
)
 
3-x
(OH)
 
4x
Kerimasite
Ca
 
3
Zr
 
2
(SiO
 
4
)(Fe
3+
 
O
 
4
)
 
2
Khoharite
Mg
 
3
Fe
3+
2
(SiO
 
4
)
 
3
Kimzeyite
Ca
 
3
(Zr,Ti)
 
2
((Si,Al,Fe
3+
 
)O
 
4
)
 
3
Knorringite
Mg
 
3
Cr
 
2
(SiO
 
4
)
 
3
Majorite
Mg
 
3
(Fe
2+
 
,Si,Al)
 
2
(SiO
 
4
)
 
3
Menzerite-(Y)
{(Y,REE),(Ca,Fe
2+
 
)}
 
3
{(Mg,Fe
2+
 
),(Fe
3+
 
,Al)}
 
2
[SiO
 
4
]
 
3
Momoiite
(Mn
2+
 
,Ca)
 
3
V
3+
2
(SiO
 
4
)
 
3
Morimotoite
Ca
 
3
(Ti,Fe
2+
 
,Fe
3+
 
)
 
2
((Si,Fe
3+
 
)O
 
4
)
 
3
Palenzonaite
(Ca,Na)
 
3
CaMn
2+
2
(VO
 
4
)
 
3
Pyrope
Mg
 
3
Al
 
2
(SiO
 
4
)
 
3
Schorlomite
Ca
 
3
(Ti,Fe
3+
 
)
 
2
((Si,Fe
3+
 
)O
 
4
)
 
3
Skiagite
Fe
2+
3
Fe
3+
2
[SiO
 
4
]
 
3
Spessartine
Mn
2+
3
Al
 
2
(SiO
 
4
)
 
3
Toturite
Ca
 
3
Sn
 
2
(SiO
 
4
)(Fe
3+
 
O
 
4
)
 
2
Usturite
Ca
 
3
SbZr(Fe
3+
 
O
 
4
)
 
3
Uvarovite
Ca
 
3
Cr
 
2
(SiO
 
4
)
 
3
Yafsoanite
Ca
 
3
Zn
 
3
(TeO
 
6
)
 
2
Related Minerals - Nickel-Strunz Grouping):

- +
8.AC.05Howardevansite
NaCuFe
 
2
(VO
 
4
)
 
3
8.AC.10Alluaudite
(Na,Ca)Mn
2+
 
(Fe
3+
 
,Mn
2+
 
,Fe
2+
 
,Mg)
 
2
(PO
 
4
)
 
3
8.AC.10Arseniopleite
NaCaMn
2+
 
(Mn
2+
 
,Mg)
 
2
(AsO
 
4
)
 
3
8.AC.10Caryinite
(Na,Pb)(Ca,Na)(Ca,Mn
2+
 
)(Mn
2+
 
,Mg,Fe
3+
 
)
 
2
(AsO
 
4
)
 
3
8.AC.10Ferroalluaudite
(Na,Ca)Fe
2+
 
(Fe
3+
 
,Mn
2+
 
,Fe
2+
 
)
 
2
(PO
 
4
)
 
3
8.AC.10Hagendorfite
NaCaMn
2+
 
Fe
2+
2
(PO
 
4
)
 
3
8.AC.10Johillerite
Na(Mg,Zn)
 
3
Cu(AsO
 
4
)
 
3
8.AC.10Maghagendorfite
(□,Na,)(Na,Ca,Fe
2+
 
)Mn(Mg,Fe
2+
 
,Fe
3+
 
)
 
3
(PO
 
4
)
 
3
8.AC.10Nickenichite
Na
 
0.8
Ca
 
0.4
Cu
 
0.4
(Mg,Fe)
 
3
(AsO
 
4
)
 
3
8.AC.10Varulite
NaCaMn
2+
 
Mn
2+
2
(PO
 
4
)
 
3
8.AC.10Ferrohagendorfite
NaCaFe
2+
 
Fe
2+
2
(PO
 
4
)
 
3
8.AC.10Bradaczekite
NaCu
 
4
(AsO
 
4
)
 
3
8.AC.10Yazganite
NaFe
3+
2
(Mg,Mn
2+
 
)(AsO
 
4
)
 
3
· H
 
2
O
8.AC.10Groatite
NaCaMn
 
2
(PO
 
4
)(HPO
 
4
)
 
2
8.AC.15Bobfergusonite
Na
 
2
Mn
 
5
FeAl(PO
 
4
)
 
6
8.AC.15Ferrowyllieite
(Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO
 
4
)
 
3
8.AC.15Qingheiite
NaMn
3+
 
Mg(Al,Fe
3+
 
)(PO
 
4
)
 
3
8.AC.15Rosemaryite
(Na,Ca,Mn)(Mn,Fe
2+
 
)(Fe
3+
 
,Mg)Al(PO
 
4
)
 
3
8.AC.15Wyllieite
(Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO
 
4
)
 
3
8.AC.15Ferrorosemaryite
◻NaFe
2+
 
Fe
3+
 
Al(PO
 
4
)
 
3
8.AC.15Qingheiite-(Fe2+)
Na
 
2
Fe
2+
 
MgAl(PO
 
4
)
 
3
8.AC.18Manitobaite
Na
 
16
Mn
2+
 
 
25
Al
 
8
(PO
 
4
)
 
30
8.AC.20Marićite
NaFe
2+
 
(PO
 
4
)
8.AC.25Berzeliite
NaCa
 
2
(Mg,Mn
2+
 
)
 
2
(AsO
 
4
)
 
3
8.AC.25Manganberzeliite
(Ca,Na)
 
3
(Mn
2+
 
,Mg)
 
2
(AsO
 
4
)
 
3
8.AC.25Palenzonaite
(Ca,Na)
 
3
CaMn
2+
2
(VO
 
4
)
 
3
8.AC.30Brianite
Na
 
2
CaMg(PO
 
4
)
 
2
8.AC.35Vitusite-(Ce)
Na
 
3
(Ce,La,Nd)(PO
 
4
)
 
2
8.AC.40Olgite
(Sr,Ba)(Na,Sr,REE)
 
2
Na(PO
 
4
)
 
2
8.AC.40Bario-olgite
(Ba,Sr)(Na,Sr,REE)
 
2
Na(PO
 
4
)
 
2
·
8.AC.45Strontiowhitlockite
Sr
 
9
Mg(PO
 
4
)
 
6
(HPO
 
4
)
8.AC.45Whitlockite
Ca
 
9
Mg(PO
 
4
)
 
6
(HPO
 
4
)
8.AC.45Merrillite
Ca
 
9
NaMg(PO
 
4
)
 
7
8.AC.45Tuite
Ca
 
3
(PO
 
4
)
 
2
8.AC.45Ferromerrillite
Ca
 
9
NaFe
2+
 
(PO
 
4
)
 
7
8.AC.45Bobdownsite
Ca
 
9
Mg(PO
 
4
)
 
6
(PO
 
3
F)
8.AC.50Chladniite
{Ca}{Na
 
8
}{Ca
 
4
Na
 
4
}{(Mg,Fe
2+
 
)
 
43
}(PO
 
4
)
 
36
8.AC.50Fillowite
{Mn
2+
 
}{Na
 
8
}{Ca
 
4
Na
 
4
}{(Mn
2+
 
,Fe
2+
 
)
 
43
}(PO
 
4
)
 
36
8.AC.50Johnsomervilleite
Na
 
10
Ca
 
6
Mg
 
18
Fe
 
25
(PO
 
4
)
 
36
8.AC.50Galileiite
{Fe
2+
 
}{Na
 
8
}{Fe
2+
4
Na
 
4
}{Fe
2+
43
}(PO
 
4
)
 
36
8.AC.50Stornesite-(Y)
{(Y, Ca)}{Na
 
6
 
2
}{(Ca,Na)
 
8
}{(Mg,Fe
2+
 
)
 
43
}(PO
 
4
)
 
36
8.AC.50Xenophyllite
Na
 
4
Fe
2+
7
(PO
 
4
)
 
6
8.AC.55Harrisonite
Ca(Fe
2+
 
,Mg)
 
6
(PO
 
4
)
 
2
(SiO
 
4
)
 
2
8.AC.60Kosnarite
KZr
 
2
(PO
 
4
)
 
3
8.AC.65Panethite
(Na,Ca)
 
2
(Mg,Fe
2+
 
)
 
2
(PO
 
4
)
 
2
8.AC.70Stanfieldite
Ca
 
7
Ca
 
2
Mg
 
9
(PO
 
4
)
 
12
8.AC.75Ronneburgite
K
 
2
MnV
 
4
O
 
12
8.AC.80Tillmannsite
(Ag
 
3
Hg)(VO
 
4
,AsO
 
4
)
8.AC.85Filatovite
K(Al,Zn)
 
2
(As,Si)
 
2
O
 
8
Related Minerals - Dana Grouping):

- +
38.2.1.1Berzeliite
NaCa
 
2
(Mg,Mn
2+
 
)
 
2
(AsO
 
4
)
 
3
38.2.1.2Manganberzeliite
(Ca,Na)
 
3
(Mn
2+
 
,Mg)
 
2
(AsO
 
4
)
 
3
38.2.1.3Palenzonaite
(Ca,Na)
 
3
CaMn
2+
2
(VO
 
4
)
 
3

Other Names for Schäferite

Synonyms:
IMA1997-048
Other Languages:
German:Schäferit
Russian:Шеферит
Spanish:Schäferita

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 Schäferite

Reference List:

- +
Krause, W., Blaß, G. and Effenberger, H. (1999): Schäferite, a new vanadium garnet from the Bellberg volcano, Eifel, Germany. Neues Jahrbuch für Mineralogie, Monatshefte (1999): 123-134.

Internet Links for Schäferite

Search Engines:
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  • External Links:
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  • Look for Schäferite on Wikipedia
  • Look for Schäferite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Schäferite details from Handbook of Mineralogy (PDF)
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  • Localities for Schäferite

    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.
    (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.
    Germany
     
    • Rhineland-Palatinate
      • Eifel
        • Andernach
          • Eich
            • Nickenicher Sattel (Eicher Sattel)
    Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
        • Mayen
          • Ettringen
            • Bellerberg volcano
    Krause, W., Blass, G., Effenberger, H., Schäferit, a new vanadium garnet from the Bellerberg volcano, Eifel, Germany, N. Jb. Miner. Mh. 1999 (3), 123-134
        • Mendig
          • Bell
    Blaß, G. & Kruijen, F. (2013): Die Mineralogischen Neuigkeiten aus der Vulkaneifel. Mineralien-Welt 24 (3), 33-41.
    Greece
     
    • Attikí Prefecture (Attica; Attika)
      • Lavrion District (Laurion; Laurium)
        • Lavrion District slag localities
          • Agios Konstantinos [St Constantine] (Kamariza)
    Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (II). Mineralien-Welt 25 (2), 82-95 (in German).
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