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Chapmanite

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Formula:
Fe
3+
2
Sb
3+
 
(Si
 
2
O
 
5
)O
 
3
(OH)
"1:1" layer silicate where the Fe2(Si2O5)O3(OH) part of the formula is analogous in structure to kaolinite, Al2(Si2O5)(OH)4, but additional Sb3+ is in pyramidal coordinate over the "holes" in the Fe layer.
System:MonoclinicColour:Olive green to deep ...
Hardness:
Name:For John Edward Chapman (1821-1904) Professor of geology, University of Toronto
Isostructural with:Bismutoferrite


The antimony analogue of Bismutoferrite, with which it is easily confused.

Classification of Chapmanite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/B.06-10
Nickel-Strunz 10th (pending) edition ID:9.ED.25

9 : SILICATES (Germanates)
E : Phyllosilicates
D : Phyllosilicates with kaolinite layers composed of tetrahedral and octahedral nets
Dana 8th edition ID:71.1.3.2

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
1 : Sheets of 6-membered rings with 1:1 layers
Hey's CIM Ref.:17.7.20

17 : Silicates Containing other Anions
7 : Silicates with vanadate, arsenate or antimonate
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Type Occurrence of Chapmanite

Type Locality:Keeley-Frontier Mine (Canadian Keeley; Frontier Mine; Keeley Mine), South Lorrain Township, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada
Place of Conservation of Type Material:ROM and Harvard
Year of Discovery:1924

Physical Properties of Chapmanite

Diaphaneity (Transparency):Transparent
Comment:Non metallic
Colour:Olive green to deep yellow
Streak:Greenish yellow to deep yellow
Hardness (Mohs):
Comment:When compact
Fracture:Irregular/Uneven, Conchoidal
Comment:When compact
Density (measured):3.69 - 3.75 g/cm3
Density (calculated):4.29 g/cm3

Crystallography of Chapmanite

Crystal System:Monoclinic
Class (H-M):m - Domatic
Space Group:Bm
Space Group Setting:Cm
Cell Parameters:a = 5.19Å, b = 8.99Å, c = 7.70Å
β = 100.4°
Ratio:a:b:c = 0.577 : 1 : 0.857
Unit Cell Volume:V 353.37 ų (Calculated from Unit Cell)
Z:2
Morphology:Crystals lath shaped, powdery, compact, massive

Optical Data of Chapmanite

Type:Biaxial (-)
RI values: nα = 1.850 nβ = 1.950 nγ = 1.960
2V:Calculated: 32°
Maximum Birefringence:δ = 0.110

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:none

Chemical Properties of Chapmanite

Formula:
Fe
3+
2
Sb
3+
 
(Si
 
2
O
 
5
)O
 
3
(OH)


"1:1" layer silicate where the Fe2(Si2O5)O3(OH) part of the formula is analogous in structure to kaolinite, Al2(Si2O5)(OH)4, but additional Sb3+ is in pyramidal coordinate over the "holes" in the Fe layer.
Simplified for copy/paste:Fe3+2Sb3+(Si2O5)O3(OH)
Essential elements:Fe, H, O, Sb, Si
All elements listed in formula:Fe, H, O, Sb, Si
Common Impurities:Al

Relationship of Chapmanite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.ED.05Dickite
Al
 
2
(Si
 
2
O
 
5
)(OH)
 
4
9.ED.05Kaolinite
Al
 
2
(Si
 
2
O
 
5
)(OH)
 
4
9.ED.05Nacrite
Al
 
2
(Si
 
2
O
 
5
)(OH)
 
4
9.ED.05Odinite
(Fe,Mg,Al,Fe,Ti,Mn)
 
2.4
((Si,Al)
 
2
O
 
5
)(OH)
 
4
9.ED.10Halloysite
Al
 
2
(Si
 
2
O
 
5
)(OH)
 
4
9.ED.10Hisingerite
Fe
3+
2
(Si
 
2
O
 
5
)(OH)
 
4
· 2H
 
2
O
9.ED.10Halloysite-7Å
Al
 
2
(Si
 
2
O
 
5
)(OH)
 
4
9.ED.15Amesite
Mg
 
2
Al(AlSiO
 
5
)(OH)
 
4
9.ED.15Antigorite
Mg
 
3
(Si
 
2
O
 
5
)(OH)
 
4
9.ED.15Berthierine
(Fe
2+
 
,Fe
3+
 
,Al)
 
3
(Si,Al)
 
2
O
 
5
(OH)
 
4
9.ED.15Brindleyite
(Ni,Al)
 
3
(Si,Al)
 
2
O
 
5
(OH)
 
4
9.ED.15Caryopilite
(Mn,Mg)
 
3
(Si
 
2
O
 
5
)(OH)
 
4
9.ED.15Chrysotile
Mg
 
3
(Si
 
2
O
 
5
)(OH)
 
4
9.ED.15Cronstedtite
Fe
2+
2
Fe
3+
 
((Si,Fe
3+
 
)
 
2
O
 
5
)(OH)
 
4
9.ED.15Fraipontite
(Zn,Al)
 
3
((Si,Al)
 
2
O
 
5
)(OH)
 
4
9.ED.15Greenalite
Fe
 
2-3
(Si
 
2
O
 
5
)(OH)
 
4
9.ED.15Kellyite
Mn
2+
2
Al(AlSiO
 
5
)(OH)
 
4
9.ED.15Lizardite
Mg
 
3
(Si
 
2
O
 
5
)(OH)
 
4
9.ED.15Manandonite
Li
 
2
Al
 
4
(Si
 
2
AlB)O
 
10
(OH)
 
8
9.ED.15Népouite
(Ni,Mg)
 
3
(Si
 
2
O
 
5
)(OH)
 
4
9.ED.15Pecoraite
Ni
 
3
(Si
 
2
O
 
5
)(OH)
 
4
9.ED.15Guidottiite
Mn
 
2
Fe
3+
 
(Fe
3+
 
SiO
 
5
)(OH)
 
4
9.ED.20Allophane
(Al
 
2
O
 
3
)(SiO
 
2
)
 
1.3-2
· 2.5-3H
 
2
O
9.ED.20Chrysocolla
Cu
 
2-x
Al
 
x
(H
 
2-x
Si
 
2
O
 
5
)(OH)
 
4
· nH
 
2
O (x < 1)
9.ED.20Imogolite
Al
 
2
SiO
 
3
(OH)
 
4
9.ED.20Neotocite
(Mn,Fe,Mg)SiO
 
3
· H
 
2
O
9.ED.25Bismutoferrite
Fe
3+
2
Bi(SiO
 
4
)
 
2
(OH)
Related Minerals - Hey's Index Grouping:

- +
17.7.1Suzukiite
BaVSi
 
2
O
 
7
17.7.2Franciscanite
Mn
2+
6
(V
5+
 
,☐)
 
2
(SiO
 
4
)
 
2
(O,OH)
 
6
17.7.3Kurumsakite
(Zn,Ni,Cu)
 
8
Al
 
8
V
5+
2
Si
 
5
O
 
35
· 27H
 
2
O (?)
17.7.4Ardennite-(As)
Mn
2+
4
(Al,Mg)
 
6
(Si
 
3
O
 
10
)(SiO
 
4
)
 
2
(AsO
 
4
,VO
 
4
)(OH)
 
6
17.7.5Medaite
(Mn,Ca)
 
6
(V,As)Si
 
5
O
 
18
OH
17.7.6Johninnesite
Na
 
2
Mn
2+
9
Mg
 
7
(OH)
 
8
[AsO
 
4
]
 
2
[Si
 
6
O
 
17
]
 
2
17.7.7Tiragalloite
Mn
2+
4
(HAsSi
 
3
O
 
13
)
17.7.8Dixenite
CuMn
2+
14
Fe
2+
 
(SiO
 
4
)
 
2
(As
5+
 
O
 
4
)(As
3+
 
O
 
3
)
 
5
(OH)
 
6
17.7.9Asbecasite
Ca
 
3
(Ti,Sn
4+
 
)Be
 
2
(AsO
 
3
)
 
6
(SiO
 
4
)
 
2
17.7.10Mcgovernite
Mn
 
19
Zn
 
3
(AsO
 
4
)
 
3
(AsO
 
3
)(SiO
 
4
)
 
3
(OH)
 
21
17.7.11Kraisslite
Zn
 
3
(Mn,Mg)
 
25
(Fe
3+
 
,Al)(As
3+
 
O
 
3
)
 
2
[(Si,As
5+
 
)O
 
4
]
 
10
(OH)
 
16
17.7.12Schallerite
(Mn,Fe)
 
16
Si
 
12
As
 
3
O
 
36
(OH)
 
17
17.7.13Nelenite
(Mn,Fe)
 
16
(Si
 
12
O
 
30
)(OH)
 
14
[As
3+
3
O
 
6
(OH)
 
3
]
17.7.14Kolicite
Mn
2+
7
Zn
 
4
(AsO
 
4
)
 
2
(SiO
 
4
)
 
2
(OH)
 
8
17.7.15Yeatmanite
Zn
 
6
Mn
2+
9
Sb
5+
2
(SiO
 
4
)
 
4
O
 
12
17.7.16Welshite
Ca
 
4
Mg
 
9
Sb
 
3
O
 
4
[Si
 
6
Be
 
3
AlFe
 
2
O
 
36
]
17.7.17Katoptrite
(Mn
2+
 
,Mg)
 
13
(Al,Fe
3+
 
)
 
4
Sb
5+
2
(SiO
 
4
)
 
2
O
 
20
17.7.18Parwelite
Mn
 
10
Sb
 
2
As
 
2
Si
 
2
O
 
24
17.7.19Långbanite
(Mn
2+
 
,Ca)
 
4
(Mn
3+
 
,Fe
3+
 
)
 
9
Sb
5+
 
(SiO
 
4
)
 
2
O
 
16
17.7.21Cervandonite-(Ce)
(Ce,Nd,La)(Fe
3+
 
,Fe
2+
 
,Ti,Al)
 
3
O
 
2
(Si
 
2
O
 
7
)(As
3+
 
O
 
3
)(OH)

Other Names for Chapmanite

Synonyms:
Antimon-Hypochlorite
Other Languages:
German:Chapmanit
Russian:Чапманит
Spanish:Chapmanita

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 Chapmanite

Reference List:

- +
WALKER, T.L. (1924): Chapmanite, a new hydrous ferrous silica-antimonate from South Lorrain, Ontario. Contributions to Canadian Mineralogy, University of Toronto, Geology Series 17, 5-8.
Milton, C., J.M. Axelrod, and B. Ingram (1958): Bismutoferrite, chapmanite, and "hypochlorite". American Mineralogist, 43, 656-670.
ZHUKHLISTOV, A.P. & ZVYAGIN, B.B. (1977): Determination of the crystal structures of chapmanite and bismutoferrite by high-voltage electron diffraction. Kristallografiya 22, 731-738. (in Russian). in English: Soviet Physics and Crystallography 22, 419-423.
Powder Diffraction: 13(1): 44-49.

Internet Links for Chapmanite

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

    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.
    Canada
     
    • Ontario
      • Timiskaming District
        • Cobalt-Gowganda region
          • Cobalt area
            • Coleman Township
    Cataloque of Canadian Minerals, 1980, R.J.Trail, GSC Paper 80-18, pg102.
          • South Lorrain Township
    WALKER, T.L. (1924): Chapmanite, a new hydrous ferrous silica-antimonate from South Lorrain, Ontario. Contributions to Canadian Mineralogy, University of Toronto, Geology Series 17, 5-8. ZHUKHLISTOV, A.P. & ZVYAGIN, B.B. (1977): Determination of the crystal structures of chapmanite and bismutoferrite by high-voltage electron diffraction. Kristallografiya 22, 731-738. (in Russian). in English: Soviet Physics and Crystallography 22, 419-423.
    Ann P. Sabina (1974) Rocks and Minerals for the Collector: Cobalt-Belleferre-Timmins; Ontario and Quebec. Canadian Geological Survey Paper 73-13
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Benešov (Beneschau)
          • Votice (Wotitz)
    Duda, Rejl, Slivka: "Mineralien", 1991
        • Příbram
          • Vrančice
    [Lapis 1995, 12, p.13-24]
        • Zruč nad Sázavou (Srutsch an der Sasau)
    Žáček, V.: Chapmanit z Vlastějovic. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1997, roč. 4-5, s. 227.
    France
     
    • Alsace
      • Haut-Rhin
        • Fecht valley (Munster valley)
          • Stosswihr
    FLUCK, P. & STEIN, S. (1992): Espèces minérales des principaux districts miniers du massif vosgien. - Pierres et Terre 35, December 1992, 120 pp.
    • Auvergne
      • Haute-Loire
        • Mercoeur
          • Chazelles-Haut (Chazelle)
    J.-J. Périchaud: Les Minéraux d'Auvergne, Vol. 2, Clermont-Ferrand (1986)
    • Lorraine
      • Vosges
        • Upper Moselle Valley
    Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
    Germany
     
    • Saxony
      • Erzgebirge
        • Freiberg District
          • Bräunsdorf
    C.M. Kersten (1844) Jahrbuch für den Berg- und Hüttenmann, 59-61; A. Frenzel (1874): Mineralogisches Lexicon für das Königreich Sachsen (as Antimon-Hypochlorit)
    Italy
     
    • Tuscany
      • Grosseto Province
        • Manciano
      • Lucca Province
        • Apuan Alps
          • Stazzema
            • Ponte Stazzemese
    Orlandi P., Dini A., 2004. Die Mineralien der Buca della Vena-Mine, Apuaner Berge, Toskana (Italien). Lapis, 1: 11-24.
    Japan
     
    • Kyushu Region
      • Kagoshima Prefecture
        • Suzuyama District
    Handbook of Mineralogy
    Kyrgyzstan
     
    • Osh Oblast
      • Alai Range (Alay Range)
    [Lapis 1993:11 p11-24]
    Slovakia
     
    • Bratislava Region
      • Pezinok Co.
        • Pezinok
          • Kolársky hill
    Polák S., 1983: Chapmanit z Pezinka. Miner. Slov., 15, 565-566.
    Polák S., 1983: Chapmanit z Pezinka. Mineralia Slovaca, 15, 565-566. (in Slovak) Polák S., 1988: Ešte raz o chapmanite z Pezinka. Mineralia Slovaca, 20, 475-476. (in Slovak)
    Spain
     
    • Asturias
      • Río Narcea Gold Belt
        • Belmonte de Miranda
    Mesa, M., Calvo, M. & Viñals,(2002). El Valle - Boinás, un proyecto moderno con m inerales de excepción. Bocamina, 9, 40-85.
      • Salas
        • Carlés
    A Borrelli collection
    USA
     
    • Nevada
      • Humboldt Co.
        • Opalite District
    NBMG Spec. Pub. 31 Minerals of Nevada
      • Mineral Co.
        • Candelaria District
    NBMG Spec. Pub. 31 Minerals of Nevada
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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