Agrellite (original) (raw)
A valid IMA mineral species
About AgrelliteHide
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Colour:
White to greyish or greenish white.
Name:
Named in honor of Stuart Olof Agrell (5 March 1913, Ruislip, Middlesex, UK – 29 January 1996), British mineralogist and meteoricist at Cambridge University. He was popular in the United Kingdom for his public television and radio appearances discussing the collection of lunar rocks and soils during the Apollo missions.
This page provides mineralogical data about Agrellite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:57:0
b045fa9a-8d29-4cd7-aee0-06130926dfa2
IMA Classification of AgrelliteHide
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Type description reference:
Classification of AgrelliteHide
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9.DH.75
9 : SILICATES (Germanates)
D : Inosilicates
H : Inosilicates with 4-periodic single chains, Si4O12
70.1.1.4
70 : INOSILICATES Column or Tube Structures
1 : Column or Tube Structures with columnar silicate units
17.1.3
17 : Silicates Containing other Anions
1 : Silicates with fluoride (not containing Al)
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 |
|---|---|---|
| Are | 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 AgrelliteHide
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Transparency:
Transparent, Translucent
Comment:
Pearly on cleavages.
Colour:
White to greyish or greenish white.
Cleavage:
Perfect
Excellent on {110} and {110}, poor on {010}
Density:
2.902 g/cm3 (Measured) 2.887 g/cm3 (Calculated)
Optical Data of AgrelliteHide
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RI values:
_n_α = 1.567 _n_β = 1.579 _n_γ = 1.581
δ = 0.014
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of AgrelliteHide
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Mindat Formula:
NaCa2Si4O10F
Crystallography of AgrelliteHide
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Class (H-M):
1 - Pinacoidal
Cell Parameters:
a = 7.759(2) Å, b = 18.946(3) Å, c = 6.986(1) Å
α = 89.88(2)°, β = 116.65(2)°, γ = 94.32(2)°
Ratio:
a:b:c = 0.41 : 1 : 0.369
Unit Cell V:
914.67 ų (Calculated from Unit Cell)
Morphology:
Crystals elongated k [001], to 10 cm; platy aggregates.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0000722 | Agrellite | Ghose S, Wan C (1979) Agrellite, Na(Ca,RE)2Si4O10F: A layer structure with silicate tubes American Mineralogist 64 563-572 |  |
1979 | 0 | 293 | |
| 0019049 | Agrellite | Rozhdestvenskaya I V, Nikishova L V (1998) Crystal structure of Na(Ca,Sr)2Si4O10F strontium agrellite from Yakutian charoitites: agrellite polytypes Crystallography Reports 43 589-597 | 1998 | Sirenevyi Kamen deposit, Murunskii massif, Yakutia, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.19 Å | (vs) |
| 3.14 Å | (vs) |
| 3.44 Å | (s) |
| 3.33 Å | (s) |
| 2.58 Å | (s) |
| 2.31 Å | (s) |
| 2.04 Å | (ms) |
Geological EnvironmentHide
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Type Occurrence of AgrelliteHide
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Place of Conservation of Type Material:
Canadian Museum of Nature, Ottawa;
University of Toronto, Toronto;
Royal Ontario Museum, Toronto, Canada, M34496;
Harvard University, Cambridge, Massachusetts, 117050; National Museum of Natural History, Washington, D.C., USA, 127007;
Cambridge Un
Geological Setting of Type Material:
In pegmatite lenses and pods and in mafic gneisses in a regionally metamorphosed agpaitic alkalic rock complex
Associated Minerals at Type Locality:
Reference:
Gittins, J., Bown, M.G., Sturman, D. (1976) Agrellite, a new rock-forming mineral in regionally metamorphosed agpaitic alkalic rocks. The Canadian Mineralogist: 14: 120-126.
Synonyms of AgrelliteHide
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Other Language Names for AgrelliteHide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 9.DH. | Gageite-2M | (Mn,Mg,Zn)42Si16O54(OH)40 | Mon. 2/m |
|---|---|---|---|
| 9.DH. | Bavsiite | Ba2V2O2[Si4O12] | Tet. 4/m : _I_4/m |
| 9.DH. | Devilliersite | Ca4Ca2Fe3+10O4[(Fe3+10Si2)O36] | Tric. 1 : _P_1 |
| 9.DH. | Yuzuxiangite | Sr3Fe3+(Si2O6)2(OH) · 3H2O | Mon. 2/m : _P_21/m |
| 9.DH. | Louisfuchsite | Ca2(Mg4Ti2)(Al4Si2)O20 | Tric. 1 : _P_1 |
| 9.DH.05 | Leucophanite | NaCaBeSi2O6F | Orth. 222 : _P_212121 |
| 9.DH.10 | Ohmilite | Sr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O | Mon. 2/m : _P_21/m |
| 9.DH.15 | Haradaite | SrVSi2O7 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.DH.15 | Suzukiite | BaVSi2O7 | Orth. |
| 9.DH.20 | Batisite | BaNaNaTi2(Si4O12)O2 | Orth. m m m _(_2/_m_2/_m_2/m ) : I m m a |
| 9.DH.20 | Shcherbakovite | (K,Ba)KNa(Ti,Nb)2(Si4O12)O2 | Orth. m m m _(_2/_m_2/_m_2/m ) : I m m a |
| 9.DH.20 | Noonkanbahite | BaKNaTi2(Si4O12)O2 | Orth. m m m _(_2/_m_2/_m_2/m ) : I m m a |
| 9.DH.25 | Taikanite | Sr3BaMn2+2(Si4O12)O2 | Mon. 2 : _B_2 |
| 9.DH.30 | Krauskopfite | BaSi2O5 · 3H2O | Mon. 2/m : _P_21/b |
| 9.DH.35 | Balangeroite | (Mg,Fe2+,Fe3+,Mn2+)42Si16O54(OH)40 | Mon. 2/m |
| 9.DH.35 | Gageite | Mn21(Si4O12)2O3(OH)20 | Mon. 2/m |
| 9.DH.40 | Aenigmatite | Na4[Fe2+10Ti2]O4[Si12O36] | Tric. 1 : _P_1 |
| 9.DH.40 | Dorrite | Ca4(Mg3Fe3+9)O4(Si3Al8Fe3+O36) | Tric. |
| 9.DH.40 | Høgtuvaite | Ca4[Fe2+6Fe3+6]O4[Si8Be2Al2O36] | Tric. 1 : _P_1 |
| 9.DH.40 | Krinovite | Na2Mg4Cr3+2(Si6O18)O2 | Tric. 1 : _P_1 |
| 9.DH.40 | Makarochkinite | (Ca,Na)4[Fe2+8Fe3+2Ti2]O4[Si8Be2Al2O36] | Tric. 1 : _P_1 |
| 9.DH.40 | Rhönite | Ca4[Mg8Fe3+2Ti2]O4[Si6Al6O36] | Tric. 1 : _P_1 |
| 9.DH.40 | Serendibite | Ca4[Mg6Al6]O4[Si6B3Al3O36] | Tric. 1 : _P_1 |
| 9.DH.40 | Welshite | Ca4Mg9Sb3O4[Si6Be3AlFe2O36] | Tric. 1 : _P_1 |
| 9.DH.40 | Wilkinsonite | Na2Fe2+4Fe3+2(Si6O18)O2 | Tric. 1 : _P_1 |
| 9.DH.40 | Leucorhönite | Ca2(Mg,Fe3+,Al)6(Si,Al)6O20 | Tric. |
| 9.DH.40 | Kuratite | Ca2(Fe2+5Ti)O2[Si4Al2O18] | Tric. 1 : _P_1 |
| 9.DH.40 | Khesinite | Ca4(Mg3Fe3+9)O4(Fe3+9Si3)O36 | Tric. 1 : _P_1 |
| 9.DH.40 | UM1991-29-SiO:FeMgNa | Na4(Mg5Fe3+7)O4[Si9Fe3+3O36] | |
| 9.DH.45 | Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] | Mon. 2/m : _P_21/b |
| 9.DH.50 | Khmaralite | (Mg,Al,Fe)16[(Al,Si,Be)12O36]O4 | Mon. 2/m : _P_21/b |
| 9.DH.55 | Surinamite | (Mg,Fe)3Al4BeSi3O16 | Mon. 2/m |
| 9.DH.55 | UM1988-26-SiO:AlMg | Mg4Al2O[Si3Al2O15] | |
| 9.DH.60 | Deerite | Fe2+6Fe3+3(Si6O17)O3(OH)5 | Mon. 2/m : _P_21/b |
| 9.DH.65 | Howieite | Na(Fe2+,Fe3+,Al,Mg)12(Si6O17)2(O,OH)10 | Tric. 1 : _P_1 |
| 9.DH.65 | Taneyamalite | (Na,Ca)Mn2+12(Si,Al)12(O,OH)44 | Tric. |
| 9.DH.70 | Johninnesite | Na2Mn2+9Mg7(OH)8[AsO4]2[Si6O17]2 | Tric. |
Fluorescence of AgrelliteHide
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Fluoresces bright pink under LW UV and duller pink under SW UV.
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 AgrelliteHide
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References for AgrelliteHide
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Localities for AgrelliteHide
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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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