Caryopilite (original) (raw)
A valid IMA mineral species - grandfathered
About CaryopiliteHide
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Brusnitsyn et al. (2000) suggest the formula Mn5(Si2O5)2(OH)6.
Colour:
Brown, reddish-brown, tan
Lustre:
Resinous, Waxy, Greasy, Dull
Specific Gravity:
2.83 - 2.94
Crystal System:
Monoclinic
Name:
Named in 1889 by Axel Hamberg (1889) from the Greek, χάρυον = nut, due to its brownish color and habit + πίλος = felt, due to its appearance like a feltlike mass in thin sections.
Note: A "caryopilite-like mineral", with an X-ray powder diffraction pattern "closer to that of lizardite than to that of caryopilite", was described by Nambu et al. (1981).
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:913:1
b0c3ba6d-247c-44c1-89fa-236e2e2e45a7
IMA Classification of CaryopiliteHide
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Approved, 'Grandfathered' (first described prior to 1959)
Type description reference:
Classification of CaryopiliteHide
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9.ED.15
9 : SILICATES (Germanates)
E : Phyllosilicates
D : Phyllosilicates with kaolinite layers composed of tetrahedral and octahedral nets
71.1.2b.1
71 : PHYLLOSILICATES Sheets of Six-Membered Rings
1 : Sheets of 6-membered rings with 1:1 layers
14.18.9
14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Cpl | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Cpl | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
| Cpl | Warr (2020) | Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30 |
Physical Properties of CaryopiliteHide
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Resinous, Waxy, Greasy, Dull
Transparency:
Translucent, Opaque
Colour:
Brown, reddish-brown, tan
Comment:
Light-brown to yellow in thin section. Black when oxidized.
Streak:
Much lighter than undisturbed surface
Density:
2.83 - 2.94 g/cm3 (Measured) 2.788 g/cm3 (Calculated)
Optical Data of CaryopiliteHide
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RI values:
_n_α = 1.606 - 1.620 _n_β = 1.632 - 1.650 _n_γ = 1.632 - 1.650
δ = 0.026 - 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of CaryopiliteHide
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Mindat Formula:
Mn2+3Si2O5(OH)4
Brusnitsyn et al. (2000) suggest the formula Mn5(Si2O5)2(OH)6.
Common Impurities:
Al,As,Fe,Zn,Ca,F,Cl
Crystallography of CaryopiliteHide
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Crystal System:
Monoclinic
Cell Parameters:
a = 5.668 Å, b = 9.811 Å, c = 7.527 Å
β = 104.52°
Ratio:
a:b:c = 0.578 : 1 : 0.767
Unit Cell V:
405.20 ų (Calculated from Unit Cell)
Morphology:
Tight aggregates of small crystal to waxy spherules.
Comment:
Probably monoclinic; space group not determined.
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.3 Å | (100) |
| 3.63 Å | (60) |
| 2.81 Å | (70) |
| 2.37 Å | (10) |
| 2.10 Å | (40) |
| 1.97 Å | (10) |
| 1.80 Å | (5) |
| 1.73 Å | (10) |
| 1.634 Å | (50) |
| 1.595 Å | (30) |
| 1.593 Å | (5) |
| 1.446 Å | (5) |
| 1.412 Å | (5) |
| 1.368 Å | (5) |
Geological EnvironmentHide
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Type Occurrence of CaryopiliteHide
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General Appearance of Type Material:
As clusters of reniform aggregates.
Place of Conservation of Type Material:
Swedish Museum of Natural History, Stockholm, Sweden, number 89:0292.
Associated Minerals at Type Locality:
Reference:
Hamberg, A. (1889) Über Karyopilit, ein wasserhaltiges Manganoxydulsilikat von der Grube Harstigen bei Pajsberg in Vermland. Geologiska Föreningens i Stockholm Förhandlingar: 11: 27-32.
Synonyms of CaryopiliteHide
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Other Language Names for CaryopiliteHide
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Relationship of Caryopilite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 9.ED. | Clinochrysotile | Mon. 2/m | |
|---|---|---|---|
| 9.ED.05 | Dickite | Al2(Si2O5)(OH)4 | Mon. m : B b |
| 9.ED.05 | Kaolinite | Al2(Si2O5)(OH)4 | Tric. 1 : _P_1 |
| 9.ED.05 | Nacrite | Al2(Si2O5)(OH)4 | Mon. m : B b |
| 9.ED.05 | Odinite | (Fe,Mg,Al,Fe,Ti,Mn)2.4((Si,Al)2O5)(OH)4 | Mon. m : B m |
| 9.ED.10 | Halloysite | Al2(Si2O5)(OH)4 | Mon. m : B b |
| 9.ED.10 | Hisingerite | Fe3+2(Si2O5)(OH)4 · 2H2O | Mon. |
| 9.ED.10 | Hydrohalloysite | Al2Si2O5(OH)4 · 2H2O | Mon. m |
| 9.ED.15 | Amesite | Mg2Al(AlSiO5)(OH)4 | Tric. 1 : _P_1 |
| 9.ED.15 | Antigorite | Mg3(Si2O5)(OH)4 | Mon. m : B m |
| 9.ED.15 | Berthierine | (Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4 | Mon. m : B m |
| 9.ED.15 | Brindleyite | (Ni,Al)3(Si,Al)2O5(OH)4 | Mon. |
| 9.ED.15 | Cronstedtite | Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4 | Trig. 3_m_ : P_31_m |
| 9.ED.15 | Fraipontite | (Zn,Al)3((Si,Al)2O5)(OH)4 | Mon. |
| 9.ED.15 | Greenalite | (Fe2+,Fe3+)2-3Si2O5(OH)4 | Mon. |
| 9.ED.15 | Kellyite | Mn2+2Al(AlSiO5)(OH)4 | Hex. 6 : _P_63 |
| 9.ED.15 | Lizardite | Mg3(Si2O5)(OH)4 | Trig. 3_m_ : P_31_m |
| 9.ED.15 | Manandonite | Li2Al4(Si2AlB)O10(OH)8 | Orth. 222 : _C_2221 |
| 9.ED.15 | Népouite | Ni3Si2O5(OH)4 | Orth. |
| 9.ED.15 | Pecoraite | Ni3(Si2O5)(OH)4 | Mon. |
| 9.ED.15 | Guidottiite | Mn2Fe3+(Fe3+SiO5)(OH)4 | Hex. 6 : _P_63 |
| 9.ED.15 va | Chromoamesite | Mg2(Al,Cr)(AlSiO5)(OH)4 | |
| 9.ED.20 | Allophane | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O | Amor. |
| 9.ED.20 | Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 | Orth. |
| 9.ED.20 | Imogolite | Al2SiO3(OH)4 | |
| 9.ED.20 | Neotocite | (Mn,Fe)SiO3 · H2O (?) | Amor. |
| 9.ED.25 | Bismutoferrite | Fe3+2Bi(SiO4)2(OH) | Mon. m : B m |
| 9.ED.25 | Chapmanite | Fe3+2Sb3+(Si2O5)O3(OH) | Mon. m : B m |
| 9.ED.30 | Pianlinite | Al2Si2O6(OH)2 | Orth. |
Fluorescence of CaryopiliteHide
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Other InformationHide
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Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for CaryopiliteHide
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References for CaryopiliteHide
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Localities for CaryopiliteHide
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This 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.
Locality ListHide
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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 
- Good crystals or important locality for species. 
- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.