Tungusite (original) (raw)
A valid IMA mineral species
About TungusiteHide
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Formula:
Ca4Fe2Si6O15(OH)6
Colour:
Yellow-green, grass-green
Name:
Named after its discovery locality, the right bank of the Lower Tunguska River, Eastern Siberia Region, Russia.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:4055:2
b7585457-7b0e-484b-9bfc-fd41ab82a202
IMA Classification of TungusiteHide
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IMA Formula:
Ca14Fe2+9Si24O60(OH)22
Type description reference:
Classification of TungusiteHide
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9.EE.30
9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands
78.5.9.1
78 : Unclassified Silicates
5 :
14.22.5
14 : Silicates not Containing Aluminum
22 : Silicates of Fe and Ca
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.
| Symbol | Source | Reference |
|---|---|---|
| Tgu | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of TungusiteHide
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Colour:
Yellow-green, grass-green
Comment:
Platelets flexible.
Density:
2.59 g/cm3 (Measured)
Optical Data of TungusiteHide
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Chemistry of TungusiteHide
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Mindat Formula:
Ca4Fe2Si6O15(OH)6
Common Impurities:
Al,Mn,Mg,Na,H2O
Crystallography of TungusiteHide
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Class (H-M):
1 - Pinacoidal
Cell Parameters:
a = 9.714(9) Å, b = 9.721(9) Å, c = 22.09(3) Å
α = 90.13(1)°, β = 98.3(2)°, γ = 120.0(1)°
Ratio:
a:b:c = 0.999 : 1 : 2.272
Unit Cell V:
1,780.81 ų (Calculated from Unit Cell)
Comment:
Polytypism phenomena are known (Ferraris et al., 1995).
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.591 Å | (100) |
| 1.837 Å | (74) |
| 4.20 Å | (62) |
| 2.655 Å | (34) |
| 7.22 Å | (33) |
| 4.31 Å | (30) |
| 2.856 Å | (27) |
| 1.580 Å | (26) |
| 3.037 Å | (25) |
| 2.800 Å | (25) |
| 2.746 Å | (25) |
| 5.40 Å | (23) |
Comments:
Lower Tunguska River, Russia. Data from Ferraris et al. (1995).
Geological EnvironmentHide
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Type Occurrence of TungusiteHide
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General Appearance of Type Material:
As flakes, to 15 mm, and as platy aggregates with a radial-fibrous structure, to 8 cm. Microscopic intergrowths of tungusite with gyrolite and reyerite.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.
Geological Setting of Type Material:
Amygdules and druses in spherulitic lava.
Associated Minerals at Type Locality:
Reference:
Kudryashova, V.I. (1966) Tungusite, a new mineral of the hydrous calcium silicate group. Doklady Akademii Nauk SSSR: 171: 1167-1170.
Synonyms of TungusiteHide
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Other Language Names for TungusiteHide
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Relationship of Tungusite 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.EE. | Cairncrossite | Sr2Ca7-xNa2x(Si4O10)4(OH)2(H2O)15-x | Tric. 1 : _P_1 |
|---|---|---|---|
| 9.EE.05 | Bementite | Mn7Si6O15(OH)8 | Mon. |
| 9.EE.07 | Innsbruckite | Mn33(Si2O5)14(OH)38 | Mon. m : B m |
| 9.EE.10 | Brokenhillite | Mn8Si6O15(OH)10 | Hex. 6_m_ m : P_63_m c |
| 9.EE.10 | Pyrosmalite-(Fe) | Fe2+8Si6O15(OH,Cl)10 | Trig. 3_m_ _(_32/m ) : _P_3_m_1 |
| 9.EE.10 | Friedelite | Mn2+8Si6O15(OH,Cl)10 | Mon. 2/m : _B_2/m |
| 9.EE.10 | Pyrosmalite-(Mn) | Mn2+8Si6O15(OH,Cl)10 | Trig. 3_m_ _(_32/m ) : _P_3_m_1 |
| 9.EE.10 | Mcgillite | (Mn,Fe)8Si6O15(OH)8Cl2 | Mon. 2/m : _B_2/m |
| 9.EE.15 | Nelenite | (Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3] | Trig. 3_m_ _(_32/m ) : R_3_m |
| 9.EE.15 | Schallerite | Mn2+16As3Si12O36(OH)17 | Trig. 3_m_ : _P_3_m_1 |
| 9.EE.20 | Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Tuperssuatsiaite | Fe3+Fe3+2(Na◻)◻2Si8O20(OH)2(H2O)4 · 2H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Yofortierite | Mn2+Mn2+2Mn2+2◻2Si8O20(OH)2(H2O)4 · 4H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Windhoekite | Fe3+(Fe3+1.67◻0.33)Ca2◻2Si8O20(OH)2(H2O)4(OH)2 · 6H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Unnamed (Na-Ca-Fe-Silicate-Hydrate) | NaCa(Fe2+,Al,Mn)5[Si8O19(OH)](OH)7 · 5H2O | Tric. 1 : _P_1 |
| 9.EE.20 | Windmountainite | ◻Fe3+2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Ikorskyite | KMn3+(Si4O10) · 3H2O | Mon. 2/m : _P_21/b |
| 9.EE.25 | Falcondoite | (Ni,Mg)4Si6O15(OH)2 · 6H2O | Orth. |
| 9.EE.25 | Loughlinite | Na2Mg3Si6O16 · 8H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.EE.25 | Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P n n a |
| 9.EE.25 | Kalifersite | (K,Na)5Fe3+7Si20O50(OH)6 · 12H2O | Tric. 1 : _P_1 |
| 9.EE.30 | Gyrolite | NaCa16Si23AlO60(OH)8 · 14H2O | Tric. 1 : _P_1 |
| 9.EE.30 | Orlymanite | Ca4Mn3Si8O20(OH)6 · 2H2O | Hex. |
| 9.EE.35 | Reyerite | (Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2O | Trig. 3 : _P_3 |
| 9.EE.35 | Truscottite | (Ca,Mn)14Si24O58(OH)8 · 2H2O | Trig. |
| 9.EE.35 | Kodamaite | Na3(Ca5Na)Si16O36(OH)4F2 · (14-x)H2O | Tric. 1 : _P_1 |
| 9.EE.40 | Natrosilite | Na2Si2O5 | Mon. 2/m : _P_21/b |
| 9.EE.45 | Makatite | Na2Si4O8(OH)2 · 4H2O | Mon. 2/m : _P_21/b |
| 9.EE.50 | Varennesite | Na8Mn2Si10O25(OH,Cl)2 · 12H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : C m c m |
| 9.EE.55 | Raite | Mn2+Mn2+2Na2(◻1.75Ti0.25)Si8O20(OH)2(H2O)4 · Na(H2O)6 | Orth. 222 : _C_222 |
| 9.EE.60 | Intersilite | Na6Mn2+Ti[Si10O24(OH)](OH)3 · 4H2O | Mon. |
| 9.EE.65 | Shafranovskite | Na3K2(Mn,Fe,Na)4[Si9(O,OH)27](OH)2 · nH2O | Trig. 3_m_ : P_31_c |
| 9.EE.65 | Zakharovite | Na4Mn5Si10O24(OH)6 · 6H2O | Trig. 3_m_ |
| 9.EE.70 | Zeophyllite | Ca13Si10O28(OH)2F8 · 6H2O | Trig. 3 : _R_3 |
| 9.EE.75 | Minehillite | (K,Na)2-3Ca28Zn4Al4Si40O112(OH)16 | Hex. |
| 9.EE.80 | Fedorite | (Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2O | Tric. 1 : _P_1 |
| 9.EE.80 | Martinite | (Na,◻,Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2 · 4H2O | Tric. 1 : _P_1 |
| 9.EE.80 | Ellingsenite | Na5Ca6Si18O38(OH)13 · 6H2O | Tric. 1 : _P_1 |
| 9.EE.85 | Lalondeite | (Na,Ca)6(Ca,Na)3Si16O38(F,OH)2 · 3H2O | Tric. 1 : _P_1 |
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 TungusiteHide
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References for TungusiteHide
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Localities for TungusiteHide
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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.
| Canada | |
|---|---|
| Ontario Thunder Bay District MacGregor Township ⓘ McNamara quarry | Sabina (1991) |
| Iceland | |
| Vatnajökull Glacier ⓘ Grímsvötn | Ágústsdóttir et al. (1994) |
| India | |
| Tamil Nadu Chengalpattu district ⓘ Kalpakkam ? | Deepthi et al. (2015) |
| Portugal | |
| Madeira Madeira Island Machico Porto da Cruz ⓘ Serrado gabbro outcrop | Alves (n.d.) |
| ⓘ Terra do Baptista gabbro outcrop |
Alves (n.d.) |
| Russia | |
| Krasnoyarsk Krai Evenkiysky District ⓘ Nizhnyaya Tunguska River Basin | Ferraris et al. (1995) |
| Tura ⓘ Tura quarry (TL) | Kudryashova (1966) +1 other reference |
| Taymyrskiy Autonomous Okrug Taimyr Peninsula Putoran Plateau ⓘ Norilsk-Talnakh Mining Region | Spiridonov et al. (2008) |
| Ukraine | |
| Crimea Bakhchysarai Trudolyubovka ⓘ Pervomaiskii quarry | A.V.KASATKIN ANALYTICAL DATA +1 other reference |
| USA | |
| California Los Angeles County ⓘ Cold Creek Canyon | DeVito F. (1996) |
| Ventura County Thousand Oaks ⓘ Newbury Park | www.mindat.org (2012) |