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Sterlinghillite

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Formula:
Mn
 
3
(AsO
 
4
)
 
2
· 4H
 
2
O
Colour:Pale pink.Hardness:3
Name:Named in 1981 by Pete J. Dunn after its discovery locality, the Sterling Mine, Sterling Hill, Ogdensburg, New Jersey, USA.
Isostructural with:Ludlamite, Metaswitzerite, Switzerite


Ludlamite Group

Occurs as tiny light pinkish spherules in fracture cavities. Only 3 verified specimens known from the type locality.

Classification of Sterlinghillite

IMA status:Approved 1980
Explanation of status:Matsubara et al. (2000) suggest that formula contains only 3 H2O.
Strunz 8th edition ID:7/C.05-30
Nickel-Strunz 10th (pending) edition ID:8.CD.25

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
D : With only medium-sized cations, RO4:H2O = 1:2
Dana 8th edition ID:40.3.5.3

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
3 : A3(XO4)2·xH2O
Hey's CIM Ref.:20.8.9

20 : Arsenates (also arsenates with phosphate, but without other anions)
8 : Arsenates of Mn
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Type Occurrence of Sterlinghillite

Type Locality:Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA
General Appearance of Type Material:Tiny pinkish spherules.
Year of Discovery:1980
Geological Setting of type material:As a secondary mineral in fracture cavities traversing franklinite-calcite ore in a Precambrian Zn-Mn-Fe orebody.

Physical Properties of Sterlinghillite

Colour:Pale pink.
Hardness (Mohs):3

Optical Data of Sterlinghillite

Type:Uniaxial (-)
RI values: nω = 1.671 nε = 1.656
Maximum Birefringence:δ = 0.015

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

Chemical Properties of Sterlinghillite

Formula:
Mn
 
3
(AsO
 
4
)
 
2
· 4H
 
2
O
Simplified for copy/paste:Mn3(AsO4)2·4H2O
Essential elements:As, H, Mn, O
All elements listed in formula:As, H, Mn, O

Relationship of Sterlinghillite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.CD.05Kolbeckite
ScPO
 
4
· 2H
 
2
O
8.CD.05Metavariscite
AlPO
 
4
· 2H
 
2
O
8.CD.05Phosphosiderite
FePO
 
4
· 2H
 
2
O
8.CD.05UM2005-02-AsO:AlHPScSi
ScAsO
 
4
· 2H
 
2
O
8.CD.10Mansfieldite
AlAsO
 
4
· 2H
 
2
O
8.CD.10Scorodite
FeAsO
 
4
· 2H
 
2
O
8.CD.10Strengite
FePO
 
4
· 2H
 
2
O
8.CD.10Variscite
AlPO
 
4
· 2H
 
2
O
8.CD.10Yanomamite
InAsO
 
4
· 2H
 
2
O
8.CD.15Parascorodite
FeAsO
 
4
· 2H
 
2
O
8.CD.20Ludlamite
(Fe,Mn,Mg)
 
3
(PO
 
4
)
 
2
· 4H
 
2
O
8.CD.30Rollandite
Cu
 
3
(AsO
 
4
)
 
2
· 4H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
20.8.1Sarkinite
Mn
2+
2
(AsO
 
4
)(OH)
20.8.2Eveite
Mn
2+
2
(AsO
 
4
)(OH)
20.8.3Arsenoclasite
Mn
2+
5
(AsO
 
4
)
 
2
(OH)
 
4
20.8.4Flinkite
Mn
2+
2
Mn
3+
 
(AsO
 
4
)(OH)
 
4
20.8.5Jarosewichite
Mn
2+
3
Mn
3+
 
(AsO
 
4
)(OH)
 
6
20.8.6Allactite
Mn
2+
7
(AsO
 
4
)
 
2
(OH)
 
8
20.8.7Krautite
Mn(HAsO
 
4
) · H
 
2
O
20.8.8Synadelphite
Mn
2+
9
(As
5+
 
O
 
4
)
 
2
(As
3+
 
O
 
3
)(OH)
 
9
· 2H
 
2
O
20.8.10Geigerite
Mn
2+
5
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
· 10H
 
2
O
20.8.11Akrochordite
(Mn
2+
 
,Mg)
 
5
(AsO
 
4
)
 
2
(OH)
 
4
· 4H
 
2
O
20.8.12Manganohörnesite
(Mn,Mg)
 
3
(AsO
 
4
)
 
2
· 8H
 
2
O
20.8.13Fluckite
CaMn
2+
 
(HAsO
 
4
)
 
2
· 2H
 
2
O
20.8.14Brandtite
Ca
 
2
(Mn
2+
 
,Mg)(AsO
 
4
)
 
2
· 2H
 
2
O
20.8.15Parabrandtite
Ca
 
2
Mn
2+
 
(AsO
 
4
)
 
2
· 2H
 
2
O
20.8.16Wallkilldellite-(Mn)
Ca
 
2
Mn
2+
3
(AsO
 
4
)
 
2
(OH)
 
4
· 9H
 
2
O
20.8.17Berzeliite
NaCa
 
2
(Mg,Mn
2+
 
)
 
2
(AsO
 
4
)
 
3
20.8.18Manganberzeliite
(Ca,Na)
 
3
(Mn
2+
 
,Mg)
 
2
(AsO
 
4
)
 
3
20.8.19Magnesiochlorophoenicite
(Mg,Mn)
 
3
Zn
 
2
(AsO
 
4
)(OH,O)
 
6
20.8.20Villyaellenite
MnMn
 
2
Ca
 
2
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
· 4H
 
2
O
20.8.21Hematolite
(Mn,Mg,Al,Fe
3+
 
)
 
15
(As
5+
 
O
 
4
)
 
2
(As
3+
 
O
 
3
)(OH)
 
23
20.8.22Grischunite
NaCa
 
2
Mn
2+
5
Fe
3+
 
(AsO
 
4
)
 
6
· 2H
 
2
O

Other Names for Sterlinghillite

Synonyms:
IMA1980-007
Other Languages:
German:Sterlinghillit
Japanese:スターリングヒル石
Spanish:Sterlinghillita

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 Sterlinghillite

Reference List:

- +
Dunn, P. J. (1981): Sterlinghillite, a new hydrated manganese arsenate mineral from Ogdensburg, New Jersey: American Mineralogist: 66, 182-184.

Dunn, P.J. (1995): Franklin and Sterling Hill New Jersey: The World's Most Magnificent Mineral Deposits: Part 5: 682-683.

Matsubara, S., R. Miyawaki, T. Mouri, M. Kitamine (2000): Sterlinghillite, a rare manganese arsenate, from the Gozaisho mine, Fukushima Prefecture, Japan. Bulletin of the National Science Museum, Tokyo, Series C, 26(1-2), 1-7.

Internet Links for Sterlinghillite

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

    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.
    Japan
     
    • Honshu Island
      • Tohoku Region
        • Fukushima Prefecture
          • Iwaki City
    Ryuji Marumoto collection; Matsubara, S., Miyawaki, R., Kato, A., Matsuyama, F., Mouri, T. and Suzuki, Y. (2001): Arseniopleite from the Gozaisho mine, Fukushima Prefecture, Japan. Bulletin of the National Science Museum, Tokyo, Ser. C, 27, 51-62.
    USA
     
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Ogdensburg
            • Sterling Hill
    Dunn, P.J. (1981), Am. Min.: 66: 182-184; Dunn, P.J. (1995): Pt5: 682-683.
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