Reyerite
A valid IMA mineral species - grandfathered
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About Reyerite
Eduard Reyer
Formula:
(Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2O
Colour:
Colourless, white
Lustre:
Vitreous, Pearly
Hardness:
3½ - 4½
Specific Gravity:
2.51 - 2.58
Crystal System:
Trigonal
Member of:
Name:
Named in honor of Eduard Reyer (16 May 1849, Salzburg, Austrian Empire - 11 July 1914, Jena, Austria-Hungary), geologist in Vienna, Austria.
Unique Identifiers
Mindat ID:
3396
Long-form identifier:
mindat:1:1:3396:7
GUID
(UUID V4):
(UUID V4):
e1bbd8cc-64f0-4c6e-99e0-644cc23ee40d
IMA Classification of Reyerite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Na2Ca14Al2Si22O58(OH)8 · 6H2O
Classification of Reyerite
9.EE.35
9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands
9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands
73.2.2a.1
73 : PHYLLOSILICATES Condensed Tetrahedral Sheets
2 : Condensed Tetrahedral Sheets with double and single layers
73 : PHYLLOSILICATES Condensed Tetrahedral Sheets
2 : Condensed Tetrahedral Sheets with double and single layers
16.10.16
16 : Silicates Containing Aluminum and other Metals
10 : Aluminosilicates of Ca and alkalis
16 : Silicates Containing Aluminum and other Metals
10 : Aluminosilicates of Ca and alkalis
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Rey | 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 Reyerite
Vitreous, Pearly
Transparency:
Transparent, Translucent
Colour:
Colourless, white
Comment:
pale green with chlorite inclusions
Hardness:
3½ - 4½ on Mohs scale
Cleavage:
Perfect
{0001}
{0001}
Density:
2.51 - 2.58 g/cm3 (Measured) 2.59 g/cm3 (Calculated)
Optical Data of Reyerite
Type:
Uniaxial (-)
RI values:
nω = 1.563 - 1.568 nε = 1.558 - 1.563
Max Birefringence:
δ = 0.005
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Low
Chemistry of Reyerite
Mindat Formula:
(Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2O
Crystallography of Reyerite
Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
P3
Cell Parameters:
a = 9.767 Å, c = 19.067 Å
Ratio:
a:c = 1 : 1.952
Unit Cell V:
1,575.20 ų (Calculated from Unit Cell)
Z:
1
Morphology:
radiating aggregates of thin hexagonal plates. Massive, and intergrown with chlorite
Crystal Structure
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2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014486 | Reyerite | Merlino S (1988) The structure of reyerite, (Na,K)2Ca14Si22Al2O58(OH)8*6H2O Mineralogical Magazine 52 247-256 |  | 1988 | Niakornak, Greenland | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.17 Å | (vs) |
| 2.855 Å | (s) |
| 2.659 Å | (s) |
| 1.846 Å | (s) |
| 4.23 Å | (ms) |
| 3.52 Å | (m) |
| 3.035 Å | (m) |
Comments:
can resemble gyrolite or truscottite.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3a: Earth’s earliest Hadean crust | >4.50 |
| 9 : Lava/xenolith minerals (hornfels, sanidinite facies) | |
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Type Occurrence of Reyerite
Place of Conservation of Type Material:
University of Copenhagen, Copenhagen, Denmark.
Reference:
Cornu F., Himmelbauer, A. (1906) Reyerit. Tschermaks Mineralogische und Petrographische Mitteilungen: 25: 519-520.
Synonyms of Reyerite
Other Language Names for Reyerite
Relationship of Reyerite to other Species
Member of:
Other Members of this group:
| Kodamaite | Na3(Ca5Na)Si16O36(OH)4F2 · (14-x)H2O | Tric. 1 : P1 |
| Minehillite | (K,Na)2-3Ca28Zn4Al4Si40O112(OH)16 | Hex. |
| Truscottite | (Ca,Mn)14Si24O58(OH)8 · 2H2O | Trig. |
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 9.EE. | Cairncrossite | Sr2Ca7-xNa2x(Si4O10)4(OH)2(H2O)15-x |
| 9.EE.05 | Bementite | Mn7Si6O15(OH)8 |
| 9.EE.07 | Innsbruckite | Mn33(Si2O5)14(OH)38 |
| 9.EE.10 | Brokenhillite | Mn8Si6O15(OH)10 |
| 9.EE.10 | Pyrosmalite-(Fe) | Fe2+8Si6O15(OH,Cl)10 |
| 9.EE.10 | Friedelite | Mn2+8Si6O15(OH,Cl)10 |
| 9.EE.10 | Pyrosmalite-(Mn) | Mn2+8Si6O15(OH,Cl)10 |
| 9.EE.10 | Mcgillite | (Mn,Fe)8Si6O15(OH)8Cl2 |
| 9.EE.15 | Nelenite | (Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3] |
| 9.EE.15 | Schallerite | Mn2+16As3Si12O36(OH)17 |
| 9.EE.20 | Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| 9.EE.20 | Tuperssuatsiaite | Fe3+Fe3+2(Na◻)◻2Si8O20(OH)2(H2O)4 · 2H2O |
| 9.EE.20 | Yofortierite | Mn2+Mn2+2Mn2+2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| 9.EE.20 | Windhoekite | Fe3+(Fe3+1.67◻0.33)Ca2◻2Si8O20(OH)2(H2O)4(OH)2 · 6H2O |
| 9.EE.20 | Unnamed (Na-Ca-Fe-Silicate-Hydrate) | NaCa(Fe2+,Al,Mn)5[Si8O19(OH)](OH)7 · 5H2O |
| 9.EE.20 | Windmountainite | ◻Fe3+2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| 9.EE.25 | Falcondoite | (Ni,Mg)4Si6O15(OH)2 · 6H2O |
| 9.EE.25 | Loughlinite | Na2Mg3Si6O16 · 8H2O |
| 9.EE.25 | Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O |
| 9.EE.25 | Kalifersite | (K,Na)5Fe3+7Si20O50(OH)6 · 12H2O |
| 9.EE.30 | Gyrolite | NaCa16Si23AlO60(OH)8 · 14H2O |
| 9.EE.30 | Orlymanite | Ca4Mn3Si8O20(OH)6 · 2H2O |
| 9.EE.30 | Tungusite | Ca4Fe2Si6O15(OH)6 |
| 9.EE.35 | Truscottite | (Ca,Mn)14Si24O58(OH)8 · 2H2O |
| 9.EE.35 | Kodamaite | Na3(Ca5Na)Si16O36(OH)4F2 · (14-x)H2O |
| 9.EE.40 | Natrosilite | Na2Si2O5 |
| 9.EE.45 | Makatite | Na2Si4O8(OH)2 · 4H2O |
| 9.EE.50 | Varennesite | Na8Mn2Si10O25(OH,Cl)2 · 12H2O |
| 9.EE.55 | Raite | Mn2+Mn2+2Na2(◻1.75Ti0.25)Si8O20(OH)2(H2O)4 · Na(H2O)6 |
| 9.EE.60 | Intersilite | Na6Mn2+Ti[Si10O24(OH)](OH)3 · 4H2O |
| 9.EE.65 | Shafranovskite | Na3K2(Mn,Fe,Na)4[Si9(O,OH)27](OH)2 · nH2O |
| 9.EE.65 | Zakharovite | Na4Mn5Si10O24(OH)6 · 6H2O |
| 9.EE.70 | Zeophyllite | Ca13Si10O28(OH)2F8 · 6H2O |
| 9.EE.75 | Minehillite | (K,Na)2-3Ca28Zn4Al4Si40O112(OH)16 |
| 9.EE.80 | Fedorite | (Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2O |
| 9.EE.80 | Martinite | (Na,◻,Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2 · 4H2O |
| 9.EE.80 | Ellingsenite | Na5Ca6Si18O38(OH)13 · 6H2O |
| 9.EE.85 | Lalondeite | (Na,Ca)6(Ca,Na)3Si16O38(F,OH)2 · 3H2O |
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.
Internet Links for Reyerite
mindat.org URL:
https://www.mindat.org/min-3396.html
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References for Reyerite
Localities for Reyerite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
France | |
| André Melle (4-2010) | |
Greenland (TL) | |
| Cornu F. & Himmelbauer (1906) +1 other reference |
Iceland | |
| Kristmannsdottir et al. (1978) |
Italy | |
| Cavarretta et al. (1987) |
Poland | |
| Ł. Kruszewski EPMA/PXRD data +1 other reference |
UK | |
| Cann (1965) +1 other reference |
| [Specimen in the Natural History Museum | |
| Livingstone (1988) |
| Sorrell (n.d.) |
USA | |
| Kenny Gay message 15.09.2005 . ... |
| Clement et al. (1973) +1 other reference |
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Réunion, France