Riebeckite
A valid IMA mineral species - grandfathered
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About Riebeckite
Formula:
β»[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Riebeckite is defined as a member of the riebeckite group with Fe2+>Mg in the C2+ position and (OH) dominant in the W position.
Colour:
Usually black, also commonly light blue to blue-black, gray-blue, gray, brown
Lustre:
Vitreous, Sub-Vitreous
Hardness:
5 - 5½
Crystal System:
Monoclinic
Member of:
Name:
For Emil Riebeck [June 11, 1853 Preuslitz, Germany - June 22, 1885), German explorer, ethnologist, and mineralogist. Noted author and field collector of artifacts.
Type Locality:
Unique Identifiers
Mindat ID:
3418
Long-form identifier:
mindat:1:1:3418:6
GUID
(UUID V4):
(UUID V4):
02bfabfa-5d5a-488e-aa90-42e300826d59
IMA Classification of Riebeckite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
β»Na2(Fe2+3Fe3+2)Si8O22(OH)2
Classification of Riebeckite
9.DE.25
9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles
9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles
14.20.6
14 : Silicates not Containing Aluminum
20 : Silicates of Fe and alkali metals
14 : Silicates not Containing Aluminum
20 : Silicates of Fe and alkali metals
Mineral Symbols
As of 2021 there are now IMAβCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMAβCNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMAβCNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Rbk | IMAβCNMNC | Warr, L.N. (2021). IMAβCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Rnk | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277β279. |
Rbk | Siivolam & Schmid (2007) | Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download |
Rbk | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185β187 doi:10.2138/am.2010.3371 |
Rbk | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Riebeckite
Vitreous, Sub-Vitreous
Transparency:
Translucent, Opaque
Colour:
Usually black, also commonly light blue to blue-black, gray-blue, gray, brown
Streak:
Pale gray to bluish-grey.
Hardness:
5 - 5½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {110}
Perfect on {110}
Fracture:
Splintery
Optical Data of Riebeckite
Type:
Biaxial (-)
RI values:
nα = 1.680 - 1.698 nβ = 1.683 - 1.700 nγ = 1.685 - 1.706
2V:
Measured: 68° to 85°, Calculated: 62° to 78°
Birefringence:
0.008
Max Birefringence:
δ = 0.005 - 0.008
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:
High
Dispersion:
strong
Pleochroism:
Strong
Comments:
X dark blue Z blue gray to yellow green
Chemistry of Riebeckite
Mindat Formula:
β»[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Riebeckite is defined as a member of the riebeckite group with Fe2+>Mg in the C2+ position and (OH) dominant in the W position.
Riebeckite is defined as a member of the riebeckite group with Fe2+>Mg in the C2+ position and (OH) dominant in the W position.
Common Impurities:
Fe,Ti,Mg,Al,Mn
Age distribution
Recorded ages:
Neoproterozoic to Paleogene : 551 Ma to 41 Ma - based on 8 recorded ages.
Chemical Analysis
Oxide wt%:
1 | |
---|---|
SiO2 | 49.74 % |
TiO2 | 0.63 % |
Al2O3 | 2.04 % |
Fe2O3 | 0.0 % |
FeO | 33.36 % |
MnO | 1.36 % |
MgO | 0.99 % |
CaO | 0.80 % |
Na2O | 6.56 % |
K2O | 1.50 % |
ZrO2 | 0.0 % |
Total: | 96.98 % |
Sample references:
ID | Locality | Reference | Notes |
---|---|---|---|
1 | Motzfeldt Centre, Igaliku Complex, Kujalleq, Greenland | Sample from an alkali-rich syenite |
Crystallography of Riebeckite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 9.76 Å, b = 18.04 Å, c = 5.33 Å
β = 103.59°
β = 103.59°
Ratio:
a:b:c = 0.541 : 1 : 0.295
Unit Cell V:
912.18 Γ
Β³ (Calculated from Unit Cell)
Z:
2
Morphology:
Prismatic {110}, frequently very elongated. May be acicular, especially in late cavities. Sometimes is very acicular in fine-grained, light colored aggregates. Well-terminated crystals are uncommon.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
8.40 Γ | (100) |
4.51 Γ | (20) |
3.42 Γ | (10) |
3.27 Γ | (10) |
3.12 Γ | (60) |
2.80 Γ | (20) |
2.73 Γ | (40) |
2.18 Γ | (20) |
Comments:
ICDD 19-1061
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4a: Earthβs earliest continental crust | >4.4-3.0 |
19 : Granitic intrusive rocks | |
Stage 4b: Highly evolved igneous rocks | >3.0 |
34 : Complex granite pegmatites | |
35 : Ultra-alkali and agpaitic igneous rocks | |
Stage 5: Initiation of plate tectonics | <3.5-2.5 |
40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Geological Setting:
Alcalic granites, syenite and undersaturated rocks. Rarer in felsic volcanics and granite pegmatites; also in some schists. In iron formations as asbestiform "crocidolite".
Type Occurrence of Riebeckite
Synonyms of Riebeckite
Other Language Names for Riebeckite
Relationship of Riebeckite to other Species
Member of:
Other Members of this group:
Fluoro-riebeckite | β»{Na2}{Fe2+3Fe3+2}(Si8O22)F2 | Mon. 2/m : B2/m |
Magnesio-fluoro-riebeckite | β»{Na2}{Mg3Fe3+2}(Si8O22)F2 | |
Magnesio-riebeckite | β»{Na2}{Mg3Fe3+2}(Si8O22)(OH)2 | Mon. |
Common Associates
Associated Minerals Based on Photo Data:
67 photos of Riebeckite associated with Quartz | SiO2 |
29 photos of Riebeckite associated with Riebeckite-quartz-feldspar gneiss | |
19 photos of Riebeckite associated with Smoky Quartz | SiO2 |
19 photos of Riebeckite associated with Microcline | K(AlSi3O8) |
17 photos of Riebeckite associated with Zircon | Zr(SiO4) |
15 photos of Riebeckite associated with Titanite | CaTi(SiO4)O |
14 photos of Riebeckite associated with Astrophyllite | K2NaFe2+7Ti2Si8O26(OH)4F |
14 photos of Riebeckite associated with Rutile | TiO2 |
13 photos of Riebeckite associated with Albite | Na(AlSi3O8) |
11 photos of Riebeckite associated with Fluorite | CaF2 |
Related Minerals - Strunz-mindat Grouping
9.DE. | Clino-suenoite | β»{Mn2+2}{Mg5}(Si8O22)(OH)2 |
9.DE. | Scandio-winchite | β»(NaCa)(Mg4Sc)(Si8O22)(OH)2 |
9.DE. | Mangani-eckermannite | NaNa2(Mg4Mn3+)Si8O22(OH)2 |
9.DE.05 | Cummingtonite | β»{Mg2}{Mg5}(Si8O22)(OH)2 |
9.DE.05 | Clino-holmquistite Root Name Group | β»{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2 |
9.DE.05 | Grunerite | β»{Fe2+2}{Fe2+5}(Si8O22)(OH)2 |
9.DE.05 | Permanganogrunerite | β»{Mn2+2}{Mn2+5}(Si8O22)(OH)2 |
9.DE.05 | Ferri-fluoro-leakeite | {Na}{Na2}{Mg2Fe3+2Li}(Si8O22)F2 |
9.DE.10 | Actinolite | β»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
9.DE.10 | Ferro-ferri-tschermakite | β»{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)(OH)2 |
9.DE.10 | Ferri-tschermakite | β»{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2 |
9.DE.10 | Ferro-actinolite | β»Ca2Fe2+5(Si8O22)(OH)2 |
9.DE.10 | Ferro-hornblende | β»Ca2(Fe2+4Al)(Si7Al)O22(OH)2 |
9.DE.10 | Ferro-tschermakite | β»{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2 |
9.DE.10 | Joesmithite | Pb2+Ca2(Mg3Fe3+2)(Si6Be2)O22(OH)2 |
9.DE.10 | Magnesio-hornblende | β»Ca2(Mg4Al)(Si7Al)O22(OH)2 |
9.DE.10 | Tremolite | β»Ca2Mg5(Si8O22)(OH)2 |
9.DE.10 | Tschermakite | β»(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2 |
9.DE.10 | Cannilloite | CaCa2(Mg4Al)(Si5Al3O22)OH2 |
9.DE.10 | Fluoro-cannilloite | CaCa2(Mg4Al)(Si5Al3)O22F2 |
9.DE.10 | Parvo-manganotremolite | β»{CaMn2+}{Mg5}(Si8O22)(OH)2 |
9.DE.10 | Fluoro-tremolite | β»Ca2Mg5(Si8O22)F2 |
9.DE.10 | Magnesio-fluoro-hornblende | β»Ca2Mg5(AlSi7O22)F2 |
9.DE.10 | Ferro-fluoro-hornblende | β»Ca2(Fe2+4Al)(AlSi7O22)F2 |
9.DE.10 | Ferro-ferri-hornblende | β»Ca2(Fe2+4Fe3+)(AlSi7O22)(OH)2 |
9.DE.10 | Magnesio-ferri-hornblende | β»Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2 |
9.DE.10 | Ferro-cannilloite | CaCa2(Fe2+4Al)(Si5Al3O22)OH2 |
9.DE.10 | Ferro-ferri-cannilloite | CaCa2(Fe2+4Fe3+)(Si5Al3O22)OH2 |
9.DE.10 | Ferro-fluoro-actinolite | β»{Ca2}{Fe5}(Si8O22)F2 |
9.DE.10 | Magnesio-ferri-fluoro-hornblende | β»Ca2(Mg4Fe3+)(AlSi7O22)F2 |
9.DE.10 | Ferro-ferri-fluoro-hornblende | β»Ca2(Fe2+4Fe3+)(AlSi7O22)F2 |
9.DE.10 | Ferri-fluoro-tschermakite | β»{Ca2}{Mg3Fe3+2}(Al2Si6O22)F2 |
9.DE.10 | Ferro-ferri-fluoro-tschermakite | β»{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)F2 |
9.DE.10 | Ferro-fluoro-tschermakite | β»{Ca2}{Fe2+3Al2}(Al2Si6O22)F2 |
9.DE.10 | Fluoro-tschermakite | β»{Ca2}{Mg3Al2}(Al2Si6O22)F2 |
9.DE.10 | Clino-ferro-suenoite | β»{Mn2+2}{Fe2+5}(Si8O22)(OH)2 |
9.DE.15 | Edenite | NaCa2Mg5(Si7Al)O22(OH)2 |
9.DE.15 | Ferro-edenite | NaCa2Fe2+5(Si7Al)O22(OH)2 |
9.DE.15 | Ferro-kaersutite | NaCa2{Fe2+3AlTi}(Si6Al2O22)O2 |
9.DE.15 | Ferro-pargasite | NaCa2(Fe2+4Al)(Si6Al2)O22(OH)2 |
9.DE.15 | Hastingsite | NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2 |
9.DE.15 | Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
9.DE.15 | Magnesio-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 |
9.DE.15 | Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
9.DE.15 | Sadanagaite | {Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2 |
9.DE.15 | Fluoro-edenite | NaCa2Mg5(Si7Al)O22F2 |
9.DE.15 | Potassic-ferro-ferri-sadanagaite | {K}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2 |
9.DE.15 | Ferro-ferri-sadanagaite | {Na}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2 |
9.DE.15 | Potassic-sadanagaite | {K}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2 |
9.DE.15 | Potassic-pargasite | KCa2(Mg4Al)(Si6Al2)O22(OH)2 |
9.DE.15 | Potassic-ferro-sadanagaite | {K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2 |
9.DE.15 | Magnesio-fluoro-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22F2 |
9.DE.15 | Ferro-chloro-pargasite | NaCa2(Fe2+4Al)(Al2Si6O22)Cl2 |
9.DE.15 | Potassic-fluoro-hastingsite | KCa2(Fe2+4Fe3+)(Si6Al2)O22F2 |
9.DE.15 | Potassic-chloro-hastingsite | KCa2(Fe2+4Fe3+)(Si6Al2)O22Cl2 |
9.DE.15 | Fluoro-pargasite | NaCa2(Mg4Al)(Si6Al2)O22F2 |
9.DE.15 | Parvo-mangano-edenite | {Na}{CaMn2+}{Mg5}(AlSi7O22)(OH)2 |
9.DE.15 | Fluoro-hastingsite | NaCa2(Fe2+4Fe3+)(Al2Si6O22)F2 |
9.DE.15 | Potassic-chloro-pargasite | KCa2(Mg4Al)(Si6Al2)O22Cl2 |
9.DE.15 | Ferro-fluoro-pargasite | (Na)(Ca2)(Fe2+4Al)(Al2Si6O22)F2 |
9.DE.15 | Potassic-ferro-chloro-edenite | KCa2Fe2+5(AlSi7O22)Cl2 |
9.DE.15 | Potassic-magnesio-hastingsite | KCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 |
9.DE.15 | Potassic-ferro-pargasite | KCa2(Fe2+4Al)(Si6Al2)O22(OH)2 |
9.DE.15 | Potassic-hastingsite | KCa2(Fe2+4Fe3+)(Al2Si6O22)(OH)2 |
9.DE.15 | Chromio-pargasite | NaCa2(Mg4Cr)(Si6Al2)O22(OH)2 |
9.DE.15 | Potassic-fluoro-pargasite | KCa2(Mg4Al)(Si6Al2)O22F2 |
9.DE.15 | Ferri-kaersutite | NaCa2(Mg3Fe3+Ti)(Si6Al2O22)O2 |
9.DE.15 | Ferro-fluoro-edenite | NaCa2Fe2+5(AlSi7O22)F2 |
9.DE.15 | Ferri-sadanagaite | {Na}{Ca2}{Mg3Fe3+2}(Al3Si5O22)(OH)2 |
9.DE.15 | Ferro-sadanagaite | {Na}{Ca2}{Fe3Al2}(Al3Si5O22)(OH)2 |
9.DE.15 | Ferri-fluoro-sadanagaite | {Na}{Ca2}{Mg3Fe3+2}(Al3Si5O22)F2 |
9.DE.15 | Ferro-ferri-fluoro-sadanagaite | {Na}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)F2 |
9.DE.15 | Ferro-fluoro-sadanagaite | {Na}{Ca2}{Fe2+3Al2}(Al3Si5O22)F2 |
9.DE.15 | Fluoro-sadanagaite | {Na}{Ca2}{Mg3Al2}(Al3Si5O22)F2 |
9.DE.15 | Potassic-chloro-sadanagaite | {K}{Ca2}{Mg3Al2}(Al3Si5O22)Cl2 |
9.DE.15 | Potassic-ferro-chloro-sadanagaite | {K}{Ca2}{Fe2+3Al2}(Al3Si5O22)Cl2 |
9.DE.15 | Oxo-magnesio-hastingsite | NaCa2(Mg3(Fe3+2-x,Tix))5(Si6Al2O22)O2 |
9.DE.15 | Unnamed (F-dominant analogue of Ferri-kaersutite) | (Na,K)Ca2[Mg3(Fe3+,Fe2+)Ti](Si6Al2O22)(F,O)2 |
9.DE.15 | Vanadio-pargasite | NaCa2(Mg3+4V)(Al2Si6)O22(OH)2 |
9.DE.15 | Mangani-pargasite | NaCa2(Mg4Mn3+)(Si6Al2)O22(OH)2 |
9.DE.20 | Potassic-ferro-ferri-katophorite | {K}{CaNa}{Fe2+4Fe3+}[(AlSi7)O22](OH)2 |
9.DE.20 | Ferro-taramite | Na(CaNa)(Fe2+3Al2)(Al2Si6O22)(OH)2 |
9.DE.20 | Barroisite | β»{CaNa}{Mg3Al2}(AlSi7O22)(OH)2 |
9.DE.20 | Ferro-ferri-barroisite | β»(CaNa)(Fe2+3Fe3+2)(AlSi7O22)(OH)2 |
9.DE.20 | Ferro-ferri-winchite | β»[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2 |
9.DE.20 | Ferri-barroisite | β»(CaNa)(Mg3Fe3+2)(AlSi7O22)(OH)2 |
9.DE.20 | Ferro-ferri-taramite | Na(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2 |
9.DE.20 | Ferro-ferri-katophorite | Na(NaCa)(Fe2+4Fe3+)(Si7Al)O22(OH)2 |
9.DE.20 | Ferro-barroisite | β»{CaNa}{Fe2+3Al2}(AlSi7O22)(OH)2 |
9.DE.20 | Ferro-richterite | {Na}{CaNa}{Fe2+5}(Si8O22)(OH)2 |
9.DE.20 | Ferro-winchite | β»{CaNa}{Fe2+4Al}(Si8O22)(OH)2 |
9.DE.20 | Ferro-katophorite | {Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2 |
9.DE.20 | Ferri-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2 |
9.DE.20 | Ferri-taramite | Na(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)2 |
9.DE.20 | Magnesiotaramite | {Na}{CaNa}{Mg3AlFe3+}(Al2Si6O22)(OH)2 |
9.DE.20 | Richterite | Na(NaCa)Mg5(Si8O22)(OH)2 |
9.DE.20 | Winchite | β»{CaNa}{Mg4Al}(Si8O22)(OH)2 |
9.DE.20 | Taramite | Na(CaNa)(Mg3Al2)(Al2Si6O22)(OH)2 |
9.DE.20 | Fluoro-richterite | {Na}{CaNa}{Mg5}(Si8O22)(F,OH)2 |
9.DE.20 | Katophorite | {Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2 |
9.DE.20 | Potassic-fluoro-richterite | {K}{CaNa}{Mg5}(Si8O22)(F,OH)2 |
9.DE.20 | Potassic-richterite | {K}{CaNa}{Mg5}Si8O22(OH)2 |
9.DE.20 | Potassic-fluoro-katophorite | K(CaNa)(Mg4Al)(AlSi7O22)F2 |
9.DE.20 | Ferro-fluoro-katophorite | Na(CaNa)(Fe2+4Al)(AlSi7O22)F2 |
9.DE.20 | Ferro-ferri-fluoro-katophorite | Na(CaNa)(Fe2+4Fe3+)(AlSi7O22)F2 |
9.DE.20 | Ferri-ghoseite | β»[Mn2+Na][Mg4Fe3+]Si8O22(OH)2 |
9.DE.20 | Ferri-winchite | β»(NaCa)(Mg4Fe3+)Si8O22(OH)2 |
9.DE.20 | Fluoro-taramite | {Na}{CaNa}{Mg3Al2}(Al2Si6O22)F2 |
9.DE.20 | Ferro-fluoro-richterite | {Na}{CaNa}{Fe2+5}(Si8O22)F2 |
9.DE.20 | Fluoro-katophorite | Na(CaNa)(Mg4Al)(AlSi7O22)F2 |
9.DE.20 | Potassic-ferri-katophorite | K(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2 |
9.DE.20 | Potassic-ferro-richterite | {K}{CaNa}{Fe2+5}Si8O22(OH)2 |
9.DE.20 | Ferri-fluoro-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2 |
9.DE.20 | Potassic-ferro-taramite | K{CaNa}{Fe2+3Al2}{Si6Al2}O22(OH)2 |
9.DE.20 | Fluoro-winchite | β»{CaNa}{Mg4Al}(Si8O22)F2 |
9.DE.20 | Ferro-fluoro-winchite | β»{CaNa}{Fe2+4Al}(Si8O22)F2 |
9.DE.20 | Ferri-fluoro-barroisite | β»{CaNa}{Mg3Fe3+2}(AlSi7O22)F2 |
9.DE.20 | Ferro-fluoro-barroisite | β»{CaNa}{Fe2+3Al2}(AlSi7O22)F2 |
9.DE.20 | Ferro-ferri-fluoro-barroisite | β»{CaNa}{Fe2+3Fe3+2}(AlSi7O22)F2 |
9.DE.20 | Fluoro-barroisite | β»{CaNa}{Mg3Al2}(AlSi7O22)F2 |
9.DE.20 | Ferri-fluoro-taramite | Na(CaNa)(Mg3Fe3+2)(Al2Si6O22)F2 |
9.DE.20 | Ferro-ferri-fluoro-taramite | Na(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)F2 |
9.DE.20 | Ferro-fluoro-taramite | Na(CaNa)(Fe2+3Al2)(Al2Si6O22)F2 |
9.DE.20 | Potassic-ferri-taramite | K(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH) |
9.DE.20 | Ghoseite | β»[Mn2+Na][Mg4Al]Si8O22(OH)2 |
9.DE.20 | Potassic-ferro-ferri-taramite | K(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2 |
9.DE.20 | Clinoferroholmquistite | β»Li2[Fe2+3Al2]Si8O22(OH,F)2 |
9.DE.20 | Hjalmarite | {Na}(NaMn}{Mg5}Si8O22(OH)2 |
9.DE.25 | Arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2 |
9.DE.25 | Eckermannite | NaNa2(Mg4Al}Si8O22(OH)2 |
9.DE.25 | Ferro-eckermannite | NaNa2(Fe2+4Al)Si8O22(OH)2 |
9.DE.25 | Ferro-glaucophane | β»[Na2][Fe2+3Al2]Si8O22(OH)2 |
9.DE.25 | Glaucophane | β»[Na2][Mg3Al2]Si8O22(OH)2 |
9.DE.25 | Potassic-mangani-leakeite | [(Na,K)][Na2][Mg2Mn3+2Li]Si8O22(OH)2 |
9.DE.25 | Mangano-ferri-eckermannite | {Na}{Na2}{Mn2+4Fe3+}Si8O22(OH)2 |
9.DE.25 | Ferri-leakeite | [Na][Na2][Mg2Fe3+2Li]Si8O22(OH)2 |
9.DE.25 | Magnesio-riebeckite | β»{Na2}{Mg3Fe3+2}(Si8O22)(OH)2 |
9.DE.25 | Magnesio-arfvedsonite | {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2 |
9.DE.25 | NybΓΈite | NaNa2(Mg3Al2)(AlSi7O22)(OH)2 |
9.DE.25 | Mangano-mangani-ungarettiite | NaNa2(Mn2+2Mn3+3)(Si8O22)O2 |
9.DE.25 | Ferro-ferri-nybΓΈite | NaNa2[(Fe2+3,Mg)Fe3+2](AlSi7O22)(OH)2 |
9.DE.25 | Clino-ferro-ferri-holmquistite | β»{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2 |
9.DE.25 | Ferri-nybΓΈite | NaNa2(Mg3Fe3+2](AlSi7O22)(OH)2 |
9.DE.25 | Ferro-ferri-leakeite | [Na][Na2][Fe2+2Fe3+2Li]Si8O22(OH)2 |
9.DE.25 | Ferro-ferri-fluoro-leakeite | Na(Na2)(Fe2+2Fe3+2Li)(Si8O22)(F)2 |
9.DE.25 | Sodic-ferri-clinoferroholmquistite | Na0.5{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2 |
9.DE.25 | Magnesio-fluoro-arfvedsonite | [Na][Na2][Mg4Fe3+][Si8O22](F,OH)2 |
9.DE.25 | Ferri-pedrizite | [Na][Li2][Mg2Fe3+2Li]Si8O22(OH)2 |
9.DE.25 | Potassic-ferri-leakeite | [K][Na2][Mg2Fe3+2Li]Si8O22(OH)2 |
9.DE.25 | Fluoro-nybΓΈite | NaNa2(Mg3Al2)(AlSi7O22)(F,OH)2 |
9.DE.25 | Mangano-ferri-fluoro-leakeite | NaNa2(Mn2+2Fe3+2Li)[Si8O22]F2 |
9.DE.25 | Clino-fluoro-holmquistite | β»{Li2}{Mg3Al2}(Si8O22)F2 |
9.DE.25 | Mangani-dellaventuraite | NaNa2(MgMn3+2Ti4+Li)Si8O22O2 |
9.DE.25 | Fluoro-pedrizite | NaLi2(Mg2Al2Li)(Si8O22)F2 |
9.DE.25 | Potassic-arfvedsonite | [(K,Na)][Na2][Fe2+4Fe3+]Si8O22(OH)2 |
9.DE.25 | Mangani-obertiite | NaNa2(Mg3Mn3+Ti4+)Si8O22O2 |
9.DE.25 | Ferro-nybΓΈite | NaNa2(Fe2+3Al2)(AlSi7)O22(OH)2 |
9.DE.25 | Clino-sodic-fluoro-holmquistite | {Na}{Li2}{Mg4Al}(Si8O22)F2 |
9.DE.25 | Potassic-magnesio-fluoro-arfvedsonite | [(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2] |
9.DE.25 | Ferro-ferri-pedrizite | [Na][Li2][Fe2+2Fe3+2Li]Si8O22(OH)2 |
9.DE.25 | Potassic-magnesio-arfvedsonite | [K][Na2][Mg4Fe3+]Si8O22(OH)2 |
9.DE.25 | Ferro-fluoro-glaucophane | β»[Na2][Fe2+3Al2]Si8O22F2 |
9.DE.25 | Pedrizite | NaLi2(LiMg2Al2)(Si8O22)(OH)2 |
9.DE.25 | Ferro-pedrizite | NaLi2(Fe2+2Al2Li)Si8O22(OH)2 |
9.DE.25 | Ferro-fluoro-pedrizite | Na(Li2)(Fe2+2Al2Li)[Si8O22]F2 |
9.DE.25 | Fluoro-leakeite | NaNa2(Mg2Al2Li)(Si8O22)F2 |
9.DE.25 | Ferro-ferri-obertiite | NaNa2(Fe2+3Fe3+Ti)Si8O22O2 |
9.DE.25 | Fluoro-glaucophane | β»[Na2][Mg3Al2]Si8O22F2 |
9.DE.25 | Fluoro-riebeckite | β»{Na2}{Fe2+3Fe3+2}(Si8O22)F2 |
9.DE.25 | Magnesio-fluoro-riebeckite | β»{Na2}{Mg3Fe3+2}(Si8O22)F2 |
9.DE.25 | Fluoro-eckermannite | NaNa2(Mg4Al}Si8O22F2 |
9.DE.25 | Ferro-fluoro-eckermannite | NaNa2(Fe2+4Al}Si8O22F2 |
9.DE.25 | Fluoro-arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22F2 |
9.DE.25 | Ferri-fluoro-nybΓΈite | NaNa2(Mg3Fe3+2)(AlSi7O22)F2 |
9.DE.25 | Ferro-ferri-fluoro-nybΓΈite | NaNa2(Fe2+3Fe3+2)(AlSi7O22)F2 |
9.DE.25 | Ferro-fluoro-nybΓΈite | NaNa2(Fe2+3Al2)(AlSi7O22)F2 |
9.DE.25 | Ferro-leakeite | NaNa2(Fe2+2Al2Li)(Si8O22)(OH)2 |
9.DE.25 | Leakeite | NaNa2(Mg2Al2Li)(Si8O22)(OH)2 |
9.DE.25 | Potassic-leakeite | KNa2(Mg2Al2Li)(Si8O22)(OH)2 |
9.DE.25 | Ferri-fluoro-pedrizite | NaLi2(LiMg2Fe3+2)(Si8O22)F2 |
9.DE.25 | Ferro-ferri-fluoro-pedrizite | NaLi2(LiFe2+2Fe3+2)(Si8O22)F2 |
9.DE.25 | Clino-ferro-ferri-fluoro-holmquistite | β»{Li2}{Fe2+3Fe3+2}(Si8O22)F2 |
9.DE.25 | Clino-ferri-fluoro-holmquistite | β»{Li2}{Mg3Fe3+2}(Si8O22)F2 |
9.DE.25 | Clino-ferro-fluoro-holmquistite | β»{Li2}{Fe2+3Al2}(Si8O22)F2 |
9.DE.25 | Ferri-obertiite | NaNa2(Mg3Fe3+Ti)Si8O22O2 |
9.DE.25 | Oxo-mangani-leakeite | NaNa2(Mn3+4Li)Si8O22O2 |
9.DE.25 | Oxo-pargasite | NaCa2(Mg3(Al2-x,Tix))5(Si6Al2O22)O2 |
9.DE.25 | Unnamed (Possible K-analogue of Ferri-obertiite) | KNa2((Mg,Fe,Na)3Fe3+(Ti,Fe))Si8O22(O,F)2 |
9.DE.25 | Potassic-mangano-mangani-ungarettiite | KNa2(Mn2+2Mn3+3)Si8O22O2 |
9.DE.25 | Potassic-jeanlouisite | K(NaCa)(Mg4Ti)Si8O22O2 |
Fluorescence of Riebeckite
Not fluorescent
Other Information
Health Risks:
If in fibrous form the fibers, if breathed in, can cause serious and irreversable lung damage. Avoid exposure to dust.
Riebeckite in petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
Internet Links for Riebeckite
mindat.org URL:
https://www.mindat.org/min-3418.html
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References for Riebeckite
Reference List:
Hawthorne, F. C., Oberti, R. (2006) On the classification of amphiboles. The Canadian Mineralogist, 44 (1) 1-21 doi:10.2113/gscanmin.44.1.1
Localities for Riebeckite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
β - 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.
All localities listed without proper references should be considered as questionable.
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Zagi Mountain, Hameed Abad Kafoor Dheri, Peshawar District, Khyber Pakhtunkhwa Province, Pakistan