Pollucite (original) (raw)
Formula:
(Cs,Na)2(Al2Si4O12) · 2H2O
Colour:
Almost always colorless or white, also light gray, light pink, light blue, pale violet
Lustre:
Vitreous, Sub-Vitreous, Resinous, Waxy, Greasy
Name:
Named after Pollux, a figure from Greek mythology, brother of Castor, for its common association with "castorite" (petalite). The name was later changed to the current pollucite.
Long-form identifier:
mindat:1:1:3255:7
16e22bf6-09aa-46b2-bb1a-a2faddc114a8
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Cs(Si2Al)O6 · nH2O
9.GB.05
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
B : Chains of single connected 4-membered rings
77.1.1.2
77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
16.5.1
16 : Silicates Containing Aluminum and other Metals
5 : Aluminosilicates of Cs, NH4 and Cu
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 |
---|---|---|
Pol | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pol | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Vitreous, Sub-Vitreous, Resinous, Waxy, Greasy
Transparency:
Transparent, Translucent
Comment:
Rarely as strong vitreous luster as quartz
Colour:
Almost always colorless or white, also light gray, light pink, light blue, pale violet
Comment:
May be slightly pink due to montmorillonite inclusions
Comment:
Very brittle when compared with quartz; frequently shows splintery broken fragments
Density:
2.9 g/cm3 (Measured) 2.96 g/cm3 (Calculated)
Pleochroism:
Non-pleochroic
Comments:
Refractive index 1.508-1.528
Mindat Formula:
(Cs,Na)2(Al2Si4O12) · 2H2O
Common Impurities:
Fe,Ca,K,Rb
Class (H-M):
m_3_m _(_4/_m_32/m ) - Hexoctahedral
Cell Parameters:
a = 13.67 Å
Morphology:
Almost always massive, rarely in trapezohedral or cubic crystals usually with both forms present, but either form may be dominant.
Comment:
A monoclinic variety (C2/c) has also been reported (Kamiya et al., 2008). Pollucite may probably be (as is analcime) cubic, tetragonal, orthorhombic, monoclinic or triclinic, depending on ordering.
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ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0000159 | Pollucite | Newnham R E (1967) Crystal structure and optical properties of pollucite American Mineralogist 52 1515-1518 | 1967 | 0 | 293 | ||
0004971 | Pollucite | Gatta G D, Rotiroti N, Boffa Ballaran T, Sanchez-Valle C, Pavese A (2009) Elastic behavior and phase stability of pollucite, a potential host for nuclear waste American Mineralogist 94 1137-1143 | 2009 | Greenwood, Oxford County, Maine, USA | 0 | 293 | |
0018016 | Pollucite | Naray-Szabo S (1938) Die Struktur des Pollucits (Cs Al Si2 O6)*(H2 O)X _cod_database_code 1011122 Zeitschrift fur Kristallographie 99 277-282 | 1938 | 0 | 293 | ||
0018017 | Pollucite | Naray-Szabo S (1938) Die Struktur des Pollucits (Cs Al Si2 O6)*(H2 O)X _cod_database_code 1011123 Zeitschrift fur Kristallographie 99 277-282 | 1938 | 0 | 293 | ||
0010690 | Pollucite | Beger R M (1969) The crystal structure and chemical composition of pollucite Zeitschrift fur Kristallographie 129 280-302 | 1969 | Rumford, Maine, USA | 0 | 293 |
CIF Raw Data - click here to close
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Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.65 Å | (30) |
3.42 Å | (100) |
2.91 Å | (45) |
2.42 Å | (20) |
2.22 Å | (20) |
1.86 Å | (20) |
1.74 Å | (20) |
1.71 Å | (10) |
Comments:
25-194; also 29-407 (synthetic material)
Other Members of this group:
Alflarsenite | NaCa2Be3Si4O13(OH) · 2H2O | Mon. 2 : _P_21 |
---|---|---|
Amicite | K2Na2Al4Si4O16 · 5H2O | Mon. 2 |
Ammonioleucite | (NH4)(AlSi2O6) | Tet. 4/m : _I_41/a |
Analcime | Na(AlSi2O6) · H2O | Tric. 1 : _P_1 |
Bellbergite | (K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 · 30H2O | Hex. |
Bikitaite | LiAlSi2O6 · H2O | Tric. 1 : _P_1 |
Boggsite | Ca8Na3(Si,Al)96O192 · 70H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : I m m a |
Brewsterite Subgroup | Zeolite Group. | |
Chabazite-Levyne Subgroup | M[Al2Si4O12] · 6H2O | |
Chiavennite | CaMnBe2Si5O13(OH)2 · 2H2O | Mon. 2/m : _P_21/b |
Clinoptilolite Subgroup | M3-6(Si30Al6)O72 · 20H2O | |
Cowlesite | CaAl2Si3O10 · 6H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
Dachiardite Subgroup | Zeolite Group. | |
Direnzoite | NaK6MgCa2(Al13Si47O120) · 36H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P m m n |
Edingtonite | Ba[Al2Si3O10] · 4H2O | Orth. 222 : _P_212121 |
Epistilbite | CaAl2Si6O16 · 5H2O | Mon. |
Erionite Subgroup | M2[Al4Si14O36] · 15H2O | |
Faujasite Subgroup | M3.5[Al7Si17O48] · 32H2O | |
Ferrierite Subgroup | Zeolite Group. | |
Ferrochiavennite | Ca1-2Fe[(Si,Al,Be)5Be2O13(OH)2] · 2H2O | Mon. 2/m : _P_21/b |
Flörkeite | (K3Ca2Na)[Al8Si8O32] · 12H2O | Tric. 1 : _P_1 |
Garronite Subgroup | ||
Gaultite | Na4Zn2Si7O18 · 5H2O | Orth. m _m_2 : F d _d_2 |
Gismondine Subgroup | Zeolite Group. | |
Gmelinite Subgroup | In 1997, gmelinite was split into Gmelinite-Ca, Gmelinite-Na and Gmelinite-K. | |
Gobbinsite | Na5(Si11Al5)O32 · 11H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
Goosecreekite | Ca[Al2Si6O16] · 5H2O | Mon. 2 : _P_21 |
Gottardiite | Na3Mg3Ca5Al19Si117O272 · 93H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : C m c a |
Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O | |
Hsianghualite | Ca3Li2(Be3Si3O12)F2 | Iso. 432 : _I_4132 |
Kirchhoffite | Cs(BSi2O6) | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_41/a c d |
Laumontite | CaAl2Si4O12 · 4H2O | Mon. 2/m : _B_2/m |
Loomisite | Ba[Be2P2O8] · H2O | Mon. m |
Lovdarite | K2Na6Be4Si14O36 · 9H2O | Orth. m _m_2 |
Maricopaite | Pb7Ca2(Si,Al)48O100 · 32H2O | Orth. |
Martinandresite | Ba2(Al4Si12O32) · 10H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P m m n |
Mazzite Subgroup | Zeolite Group. | |
Merlinoite | (K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : I m m m |
Montesommaite | (K,Na)9Al9Si23O64 · 10H2O | Orth. m _m_2 : F d _d_2 |
Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O | Orth. |
Mutinaite | Na3Ca4Si85Al11O192 · 60H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
Nabesite | Na2BeSi4O10 · 4H2O | Orth. 222 : _P_212121 |
Natrolite Subgroup | A subgroup of the Zeolite Group. | |
Offretite | KCaMg(Si13Al5)O36 · 15H2O | Hex. 6_m_2 : _P_6_m_2 |
Pahasapaite | Li8(Ca,Li,K)10.5Be24(PO4)24 · 38H2O | Iso. 23 : _I_23 |
Parthéite | Ca2(Si4Al4) O15 (OH)2 · 4H2O | Mon. 2/m : _B_2/b |
Paulingite Subgroup | Paulingite was originally described in 1960. | |
Perlialite | K9Na(Ca,Sr)[Al2Si4O12]6 · 15H2O | Hex. 6/m m m _(_6/_m_2/_m_2/m ) : _P_6/m m m |
Phillipsite Subgroup | Zeolite Group. | |
Roggianite | Ca2Be(OH)2Al2Si4O13 · 2.5H2O | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_4/m c m |
Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O | |
Terranovaite | (Na,Ca)8(Si68Al12)O160 · 29H2O | Orth. |
Thomsonite Subgroup | The large majority of "thomsonite" is thomsonite-Ca. | |
Tschernichite | (Ca,Na2)[Al2Si4O12] · 4-8H2O | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_4/m m m |
Tschörtnerite | Ca4(Ca,Sr,K,Ba)3Cu3[Al3Si3O12]4(OH)8 · nH2O | Iso. m_3_m _(_4/_m_32/m ) : F m_3_m |
UM1996-38-SiO:AlCaHNa | Na-Ca-Al-Si-O-H | |
UM1999-33-SiO:AlHKNa | K7Na5Al12Si20O64 · 24H2O | |
UM2002-40-SiO:AlCaHKMgNa | (Mg,Ca,Na,K)7.5(Al12.8Si51.2)O128 · 65H2O | Tet. 422 : _P_4122 |
Unnamed (Ca analogue of Merlinoite) | (Ca,K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2O ? | |
Wairakite | Ca(Al2Si4O12) · 2H2O | Mon. 2/m : _B_2/m |
Weinebeneite | CaBe3(PO4)2(OH)2 · 4H2O | Mon. m : B b |
Wenkite | (Ba,K)4(Ca,Na)6[(Si,Al)20O39(OH)2](SO4)3 · 0.5H2O | Hex. 6_m_2 : P_62_m |
Willhendersonite | KCa[Al3Si3O12] · 5H2O | Tric. 1 : _P_1 |
Yugawaralite | CaAl2Si6O16 · 4H2O | Mon. m : P b |
Associated Minerals Based on Photo Data:
Usually non-fluorescent, rarely may have a pale yellow fluorescence in SW UV.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
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.
- 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.