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Chapmanite

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Formula:
Fe23+Sb3+(Si2O5)O3(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:
Monoclinic
Colour:
Olive green to deep ...
Hardness:
Name:
For John Edward Chapman (1821-1904) Professor of geology, University of Toronto
Isostructural with:
The antimony analogue of Bismutoferrite, with which it is easily confused.

Classification of Chapmanite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
9.ED.25

9 : SILICATES (Germanates)
E : Phyllosilicates
D : Phyllosilicates with kaolinite layers composed of tetrahedral and octahedral nets
71.1.3.2

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
1 : Sheets of 6-membered rings with 1:1 layers
17.7.20

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

Place of Conservation of First Recorded 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:
3.69 - 3.75 g/cm3 (Measured)    4.29 g/cm3 (Calculated)

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°
Max Birefringence:
δ = 0.110
Image 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:
Fe23+Sb3+(Si2O5)O3(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.
Essential elements:
All elements listed in formula:
Common Impurities:
Al

Relationship of Chapmanite to other Species

9.ED.05DickiteAl2(Si2O5)(OH)4
9.ED.05KaoliniteAl2(Si2O5)(OH)4
9.ED.05NacriteAl2(Si2O5)(OH)4
9.ED.05Odinite(Fe,Mg,Al,Fe,Ti,Mn)2.4((Si,Al)2O5)(OH)4
9.ED.10HalloysiteAl2(Si2O5)(OH)4
9.ED.10HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
9.ED.10Halloysite-7ÅAl2(Si2O5)(OH)4
9.ED.15AmesiteMg2Al(AlSiO5)(OH)4
9.ED.15AntigoriteMg3(Si2O5)(OH)4
9.ED.15Berthierine(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4
9.ED.15Brindleyite(Ni,Al)3(Si,Al)2O5(OH)4
9.ED.15Caryopilite(Mn,Mg)3(Si2O5)(OH)4
9.ED.15ChrysotileMg3(Si2O5)(OH)4
9.ED.15CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
9.ED.15Fraipontite(Zn,Al)3((Si,Al)2O5)(OH)4
9.ED.15GreenaliteFe2-3(Si2O5)(OH)4
9.ED.15KellyiteMn22+Al(AlSiO5)(OH)4
9.ED.15LizarditeMg3(Si2O5)(OH)4
9.ED.15ManandoniteLi2Al4(Si2AlB)O10(OH)8
9.ED.15Népouite(Ni,Mg)3(Si2O5)(OH)4
9.ED.15PecoraiteNi3(Si2O5)(OH)4
9.ED.15GuidottiiteMn2Fe3+(Fe3+SiO5)(OH)4
9.ED.20Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
9.ED.20ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O (x < 1)
9.ED.20ImogoliteAl2SiO3(OH)4
9.ED.20Neotocite(Mn,Fe,Mg)SiO3 · H2O
9.ED.25BismutoferriteFe23+Bi(SiO4)2(OH)
17.7.1SuzukiiteBaVSi2O7
17.7.2FranciscaniteMn62+(V5+,☐)2(SiO4)2(O,OH)6
17.7.3Kurumsakite(Zn,Ni,Cu)8Al8V25+Si5O35 · 27H2O (?)
17.7.4Ardennite-(As)Mn42+(Al,Mg)6(Si3O10)(SiO4)2(AsO4,VO4)(OH)6
17.7.5Medaite(Mn,Ca)6(V,As)Si5O18OH
17.7.6JohninnesiteNa2Mn92+Mg7(OH)8[AsO4]2[Si6O17]2
17.7.7TiragalloiteMn42+(HAsSi3O13)
17.7.8DixeniteCuMn142+Fe2+(SiO4)2(As5+O4)(As3+O3)5(OH)6
17.7.9AsbecasiteCa3(Ti,Sn4+)Be2(AsO3)6(SiO4)2
17.7.10McgoverniteMn19Zn3(AsO4)3(AsO3)(SiO4)3(OH)21
17.7.11KraissliteZn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16
17.7.12Schallerite(Mn,Fe)16Si12As3O36(OH)17
17.7.13Nelenite(Mn,Fe)16(Si12O30)(OH)14[As33+O6(OH)3]
17.7.14KoliciteMn72+Zn4(AsO4)2(SiO4)2(OH)8
17.7.15YeatmaniteZn6Mn92+Sb25+(SiO4)4O12
17.7.16WelshiteCa4Mg9Sb3O4[Si6Be3AlFe2O36]
17.7.17Katoptrite(Mn2+,Mg)13(Al,Fe3+)4Sb25+(SiO4)2O20
17.7.18ParweliteMn10Sb2As2Si2O24
17.7.19Långbanite(Mn2+,Ca)4(Mn3+,Fe3+)9Sb5+(SiO4)2O16
17.7.21Cervandonite-(Ce)(Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH)

Other Names for Chapmanite

Name in Other Languages:

Other Information

Health Risks:
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

Localities for Chapmanite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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
      • Hioki City
        • Fukiage
Ohe Rikosha specimens; Alfredo Petrov collection.
      • Suzuyama District
Handbook of Mineralogy
Kyrgyzstan
 
  • Osh Oblast
    • Alai Range (Alay Range)
[Lapis 1993:11 p11-24]
Mexico
 
  • Durango
    • Mun. de Cuencamé
Bideaux, Handbook of Mineralogy
    • Mun. de Durango
Peter Megaw collector, Marcus Origlieri analysis, December 2014
Portugal
 
  • Beja District
    • Beja
      • Nossa Senhora das Neves
MUHNAC, Lisbon (António Bello mineral collection) former Harvard
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
Mineral and/or Locality  
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