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Romarchite

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Formula:
SnO
System:Tetragonal
Name:
The name is from the acronym for the Royal Ontario Museum (section Archaeology), where the mineral was first studied.
This mineral is clearly anthropogenic, but was accepted before the current IMA CNMMN rules excluding such species came into effect.

This page provides mineralogical data about Romarchite.

Classification of Romarchite

IMA status:Approved
Strunz 8th edition ID:4/A.08-10
Nickel-Strunz 10th (pending) edition ID:4.AC.20

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
A : Metal: Oxygen = 2:1 and 1:1
C : M:O = 1:1 (and up to 1:1.25); with large cations (+- smaller ones)
Dana 8th edition ID:4.2.5.1

4 : SIMPLE OXIDES
2 : AX
Hey's CIM Ref.:7.11.1

7 : Oxides and Hydroxides
11 : Oxides of Sn and Pb
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Type Occurrence of Romarchite

Type Locality:Boundary Falls, Winnipeg River, Kenora District, Ontario, Canada
Year of Discovery:1971

Crystallography of Romarchite

Crystal System:Tetragonal
Cell Parameters:a = 3.8Å, c = 4.83Å
Ratio:a:c = 1 : 1.271
Unit Cell Volume:V 69.75 ų (Calculated from Unit Cell)

Chemical Properties of Romarchite

Formula:
SnO
Essential elements:O, Sn
All elements listed in formula:O, Sn

Relationship of Romarchite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.AC.05Swedenborgite
NaBe
 
4
Sb
5+
 
O
 
7
4.AC.10Brownmillerite
Ca
 
2
(Al,Fe
3+
 
)
 
2
O
 
5
4.AC.10Srebrodolskite
Ca
 
2
Fe
3+
2
O
 
5
4.AC.15Montroydite
HgO
4.AC.20Litharge
PbO
4.AC.25Massicot
PbO
Related Minerals - Hey's Index Grouping:

- +
7.11.2Cassiterite
SnO
 
2
7.11.4Schoenfliesite
Mg[Sn(OH)
 
6
]
7.11.5Burtite
Ca[Sn(OH)
 
6
]
7.11.6Vismirnovite
Zn[Sn(OH)
 
6
]
7.11.7Wickmanite
Mn
2+
 
[Sn(OH)
 
6
]
7.11.8Tetrawickmanite
Mn
2+
 
[Sn
4+
 
(OH)
 
6
]
7.11.9Jeanbandyite
(Fe
2+
 
,Mn
2+
 
)[Sn
4+
 
(OH)
 
6
]
7.11.10Natanite
Fe
2+
 
[Sn(OH)
 
6
]
7.11.11Mushistonite
(Cu,Zn,Fe
2+
 
)[Sn(OH)
 
6
]
7.11.12Ferronigerite-2N1S
Sn(Fe,Mg)Al
 
6
O
 
11
(OH)
7.11.13Magnesionigerite
7.11.14Argutite
GeO
 
2
7.11.15Brunogeierite
Fe
2+
2
Ge
4+
 
O
 
4
7.11.16Stottite
Fe
2+
 
[Ge
4+
 
(OH)
 
6
]
7.11.17Carboirite
FeAl
 
2
(GeO
 
4
)O(OH)
 
2
7.11.18Otjisumeite
PbGe
 
4
O
 
9
7.11.19Bartelkeite
PbFe
2+
 
Ge
 
3
O
 
8
7.11.20Massicot
PbO
7.11.21Litharge
PbO
7.11.22Minium
Pb
 
3
O
 
4
7.11.23Plattnerite
PbO
 
2
7.11.24Scrutinyite
alpha-PbO
 
2
7.11.25Murdochite
PbCu
 
6
O
 
8-x
(Cl,Br)
 
2x
where x<=0.5
7.11.26Macedonite
PbTiO
 
3
7.11.27Cesàrolite
Pb(Mn
4+
 
)
 
3
O
 
6
(OH)
 
2
7.11.28Coronadite
Pb(Mn
4+
6
Mn
3+
2
)O
 
16
7.11.29Quenselite
PbMnO
 
2
(OH)
7.11.30Plumboferrite
Pb
 
2
Fe
3+
11-x
Mn
2+
x
O
 
19-2x
, x = 1/3
7.11.31Magnetoplumbite
(Pb,Mn)(Fe,Mn)
 
12
O
 
19
7.11.32Senaite
Pb(Ti,Fe,Mn)
 
21
O
 
38

Other Names for Romarchite

Synonyms:
IMA1969-006
Other Languages:
German:Romarchit
Russian:Ромаркит
Simplified Chinese:黑锡矿
Spanish:Romarchita

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 Romarchite

Reference List:

- +
Canadian Mineralogist (1971): 10: 916.

The Canadian Mineralogist Vol. 41, pp. 649-657 (2003)

American Mineralogist (1972): 57: 1555.

Acta Crystallographica: B36: 2763-2765.

Internet Links for Romarchite

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Romarchite details from Handbook of Mineralogy (PDF)
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  • Localities for Romarchite

    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.
    Bolivia
     
    • Oruro Department
      • Avaroa Province
        • Huari
    The Canadian Mineralogist Vol. 41, pp. 649-657 (2003)
    Canada
     
    • Ontario
      • Kenora District
        • Winnipeg River
    ORGAN, R.M. & MANDARINO, J.A. (1971): Romarchite and hydroromarchite, two new stannous minerals. Canadian Mineralogist 10, 916 (abstr.).
    China
    P.M. Kartashov data
    Pavel Kartashov
    Jamaica
     
    • Kingston Parish
    Dunkle, S. E. (2002): Romarchite and Other Corrosion Phases on Metal Artifacts from the Queen Anne’s Revenge (1718). Thesis submitted to the Faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of Master of Science in Geological Sciences
    Russia
     
    • Far-Eastern Region
    Pavel M. Kartashov analytical data (2005)
    • Urals Region
      • Middle Urals
        • Sverdlovskaya Oblast'
    Pavel M. Kartashov analytical data
    Pavel Kartashov specimen
    Saudi Arabia
     
    • Mintaqah Makkah
      • Jiddah (Jeddah)
    http://rruff.geo.arizona.edu/doclib/hom/romarchite.pdf.
    U.S. Virgin Islands
     
    Alminas, Henry V.; Foord, Eugene E.; Tucker, Robert E. (1994) Geochemistry, mineralogy, and geochronology of the U.S. Virgin Islands USGS Bulletin 2057 36p
    Alminas, Henry V.; Foord, Eugene E.; Tucker, Robert E. (1994) Geochemistry, mineralogy, and geochronology of the U.S. Virgin Islands USGS Bulletin 2057 36p
    USA
     
    • Florida
      • Monroe Co.
    Dunkle, S. E. (2002): Romarchite and Other Corrosion Phases on Metal Artifacts from the Queen Anne’s Revenge (1718). Thesis submitted to the Faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of Master of Science in Geological Sciences
    • Idaho
      • Custer Co.
    The Canadian Mineralogist Vol. 41, pp. 649-657 (2003)
    • Minnesota
    The Canadian Mineralogist Vol. 41, pp. 649-657 (2003)
    • North Carolina
      • Carteret Co.
        • Beaufort
    CanMin 41:659-669
    • Texas
      • El Paso Co.
        • Franklin Mts
    R&M 66:3 pp 196-224
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