Aegirine
A valid IMA mineral species - grandfathered
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About Aegirine
Ægir
Formula:
NaFe3+Si2O6
Colour:
Dark green to greenish black, reddish brown, black
Lustre:
Vitreous
Hardness:
6
Specific Gravity:
3.5 - 3.6
Crystal System:
Monoclinic
Member of:
Name:
First described as acmit by P. H. Ström (1821) from Rundemyr, Øvre Eiker, Buskerud, Norway for a mineral earlier mentioned shortly by Strøm (1784, as "crystalliseret hornsteen eller brun kantet og riflet Schoel i quarz" (crystallized hornstone or brownish angular and grooved schorl in quartz)). Ström (1821) recognized it as a new mineral and suggested the name wernerin, after the German geologist, Abraham Gottlob Werner. But Berzelius (1821), who analysed the mineral, named it achmit after the Greek αχμη, spear point, due to the habit of the crystals.
Later, in 1834, the priest and mineralogist Hans Morten Thrane Esmark found a new mineral on Låven, Langesundsfjorden, Norway which was described and given the name aegirine, after Ægir (Aegir), the sea god in Norse mythology because the type location was along the sea shore (Berzelius 1835). Acmite and aegirine were first believed to be two separate species, one belonging to the amphiboles (acmite) and the other to the pyroxenes (aegirine). This was the case until 1871 when G. Tschermak put forward evidence that acmite and aegirine both belonged to the pyroxenes and are the same mineral. Acmite has been considered as a variety of aegirine (historically acmite had priority, so it should have been the other way around).
Later, in 1834, the priest and mineralogist Hans Morten Thrane Esmark found a new mineral on Låven, Langesundsfjorden, Norway which was described and given the name aegirine, after Ægir (Aegir), the sea god in Norse mythology because the type location was along the sea shore (Berzelius 1835). Acmite and aegirine were first believed to be two separate species, one belonging to the amphiboles (acmite) and the other to the pyroxenes (aegirine). This was the case until 1871 when G. Tschermak put forward evidence that acmite and aegirine both belonged to the pyroxenes and are the same mineral. Acmite has been considered as a variety of aegirine (historically acmite had priority, so it should have been the other way around).
Co-Type Localities:
Pyroxene Group. Clinopyroxene Subgroup.
Both acmite and aegirine have been used as designations of pyroxenes close to NaFe3+Si2O6 in composition. Acmite has also often been used to refer to the brown variety with pointed terminations (usually {221} and {661}), while aegirine has been reserved for the green to green-black colour varieties. Acmite has also been used to refer to the NaFe3+Si2O6 molecule, the so-called acmite-molecule in pyroxenes. In 1988 acmite was formally discredited as a separate species, and aegirine was used as a name for the end member NaFe3+Si2O6 (Morimoto et al., 1988).
However, at the Rundemyr locality, the TL, both brownish and green-black varieties occur as intergrowths. Raade (2010) has shown that the green aegirine from Rundemyr has a higher content of FeO, TiO2, MnO and CaO and a lower content of Fe2O3 than the brown acmite.
The deep colour typical for most aegirines is thought to be due to charge-transfer transitions, mainly Fe2+-Ti4+, but also Fe2+-Fe3+, and crystal-field transitions related to Fe2+. A peculiar material that is colourless in thin section is described from Bayan Obo, China (Ribeiro Da Costa et al., 2014).
Visit gemdat.org for gemological information about Aegirine.
Both acmite and aegirine have been used as designations of pyroxenes close to NaFe3+Si2O6 in composition. Acmite has also often been used to refer to the brown variety with pointed terminations (usually {221} and {661}), while aegirine has been reserved for the green to green-black colour varieties. Acmite has also been used to refer to the NaFe3+Si2O6 molecule, the so-called acmite-molecule in pyroxenes. In 1988 acmite was formally discredited as a separate species, and aegirine was used as a name for the end member NaFe3+Si2O6 (Morimoto et al., 1988).
However, at the Rundemyr locality, the TL, both brownish and green-black varieties occur as intergrowths. Raade (2010) has shown that the green aegirine from Rundemyr has a higher content of FeO, TiO2, MnO and CaO and a lower content of Fe2O3 than the brown acmite.
The deep colour typical for most aegirines is thought to be due to charge-transfer transitions, mainly Fe2+-Ti4+, but also Fe2+-Fe3+, and crystal-field transitions related to Fe2+. A peculiar material that is colourless in thin section is described from Bayan Obo, China (Ribeiro Da Costa et al., 2014).
Visit gemdat.org for gemological information about Aegirine.Unique Identifiers
Mindat ID:
31
Long-form identifier:
mindat:1:1:31:0
Classification of Aegirine
Accepted names for Na pyroxenes (after Morimoto et al., 1988)
IMA Classification of Aegirine
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1821
Approval history:
Approved in 1988 (special procedure).
Type description reference:
9.DA.25
9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
65.1.3c.2
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
14.20.2
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 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.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Aeg | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Aeg | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279. |
| Aeg | 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 |
| Aeg | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371 |
| Ae | 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 Aegirine
Vitreous
Transparency:
Transparent, Opaque
Comment:
Slightly resinous
Colour:
Dark green to greenish black, reddish brown, black
Comment:
bright green to yellow-green in thin section
Streak:
Pale yellowish grey
Hardness:
6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
Good on {110}
Good on {110}
Parting:
on {100}
Fracture:
Irregular/Uneven
Density:
3.5 - 3.6 g/cm3 (Measured) 3.576 g/cm3 (Calculated)
Optical Data of Aegirine
Type:
Biaxial (-)
RI values:
nα = 1.720 - 1.778 nβ = 1.740 - 1.819 nγ = 1.757 - 1.839
2V:
Measured: 60° to 90°, Calculated: 68° to 84°
Birefringence:
0.061
Max. Birefringence:
δ = 0.037 - 0.061
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
moderate to strong r > v
Pleochroism:
Visible
Comments:
X= emerald green, deep green
Y= grass green, deep green, yellow
Z= brownish green, green, yellowish brown, yellow
Y= grass green, deep green, yellow
Z= brownish green, green, yellowish brown, yellow
Comments:
Biaxial + for Ca,Mg,Fe varieties.
Chemistry of Aegirine
Mindat Formula:
NaFe3+Si2O6
Element Weights:
Elements listed:
Common Impurities:
Al,Ti,V,Mn,Mg,Ca,K,Zr,Ce
Crystallography of Aegirine
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 9.658 Å, b = 8.795 Å, c = 5.294 Å
β = 107.42°
β = 107.42°
Ratio:
a:b:c = 1.098 : 1 : 0.602
Unit Cell V:
429.06 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Prismatic crystals, showing 110, with blunt to steep terminations, to 35 cm, striated lengthwise, can be bent or twisted. In sprays of acicular crystals, fibrous, in radial concretions.
Twinning:
Simple and lamellar on {100}
Comment:
On synthetic material.
Crystallographic forms of Aegirine
Crystal Atlas:
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Aegirine no.35 - {661} - Goldschmidt (1913-1926)
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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) |
|---|---|---|---|---|---|---|---|
| 0004216 | Aegirine | Redhammer G J, Amthauer G, Roth G, Tippelt G, Lottermoser W (2006) Single crystal X-ray diffraction and temperature dependent 57Fe Mossbauer spectroscopy on the hedenbergite - aegirine (Ca,Na)(Fe2+,Fe3+)Si2O6 solid solution American Mineralogist 91 1271-1292 |  | 2006 | synthetic | 0 | 298 |
| 0004215 | Aegirine | Redhammer G J, Amthauer G, Roth G, Tippelt G, Lottermoser W (2006) Single crystal X-ray diffraction and temperature dependent 57Fe Mossbauer spectroscopy on the hedenbergite - aegirine (Ca,Na)(Fe2+,Fe3+)Si2O6 solid solution American Mineralogist 91 1271-1292 | | 2006 | synthetic | 0 | 298 |
| 0004214 | Aegirine | Redhammer G J, Amthauer G, Roth G, Tippelt G, Lottermoser W (2006) Single crystal X-ray diffraction and temperature dependent 57Fe Mossbauer spectroscopy on the hedenbergite - aegirine (Ca,Na)(Fe2+,Fe3+)Si2O6 solid solution American Mineralogist 91 1271-1292 | | 2006 | synthetic | 0 | 298 |
| 0004213 | Aegirine | Redhammer G J, Amthauer G, Roth G, Tippelt G, Lottermoser W (2006) Single crystal X-ray diffraction and temperature dependent 57Fe Mossbauer spectroscopy on the hedenbergite - aegirine (Ca,Na)(Fe2+,Fe3+)Si2O6 solid solution American Mineralogist 91 1271-1292 | | 2006 | synthetic | 0 | 298 |
| 0004210 | Aegirine | Redhammer G J, Amthauer G, Roth G, Tippelt G, Lottermoser W (2006) Single crystal X-ray diffraction and temperature dependent 57Fe Mossbauer spectroscopy on the hedenbergite - aegirine (Ca,Na)(Fe2+,Fe3+)Si2O6 solid solution American Mineralogist 91 1271-1292 | | 2006 | synthetic | 0 | 298 |
| 0004209 | Aegirine | Redhammer G J, Amthauer G, Roth G, Tippelt G, Lottermoser W (2006) Single crystal X-ray diffraction and temperature dependent 57Fe Mossbauer spectroscopy on the hedenbergite - aegirine (Ca,Na)(Fe2+,Fe3+)Si2O6 solid solution American Mineralogist 91 1271-1292 | | 2006 | synthetic | 0 | 298 |
| 0004208 | Aegirine | Redhammer G J, Amthauer G, Roth G, Tippelt G, Lottermoser W (2006) Single crystal X-ray diffraction and temperature dependent 57Fe Mossbauer spectroscopy on the hedenbergite - aegirine (Ca,Na)(Fe2+,Fe3+)Si2O6 solid solution American Mineralogist 91 1271-1292 | | 2006 | synthetic | 0 | 298 |
| 0004448 | Aegirine | Nestola F, Tribaudino M, Ballaran T B, Liebske C, Bruno M (2007) The crystal structures of pyroxenes along the jadeite - hedenbergite and jadeite - aegirine joins American Mineralogist 92 1492-1501 | | 2007 | synthetic | 0 | 293 |
| 0004447 | Aegirine | Nestola F, Tribaudino M, Ballaran T B, Liebske C, Bruno M (2007) The crystal structures of pyroxenes along the jadeite - hedenbergite and jadeite - aegirine joins American Mineralogist 92 1492-1501 | | 2007 | synthetic | 0 | 293 |
| 0004212 | Aegirine | Redhammer G J, Amthauer G, Roth G, Tippelt G, Lottermoser W (2006) Single crystal X-ray diffraction and temperature dependent 57Fe Mossbauer spectroscopy on the hedenbergite - aegirine (Ca,Na)(Fe2+,Fe3+)Si2O6 solid solution American Mineralogist 91 1271-1292 | | 2006 | synthetic | 0 | 293 |
| 0004211 | Aegirine | Redhammer G J, Amthauer G, Roth G, Tippelt G, Lottermoser W (2006) Single crystal X-ray diffraction and temperature dependent 57Fe Mossbauer spectroscopy on the hedenbergite - aegirine (Ca,Na)(Fe2+,Fe3+)Si2O6 solid solution American Mineralogist 91 1271-1292 | | 2006 | synthetic | 0 | 293 |
| 0004204 | Aegirine | Redhammer G J, Amthauer G, Roth G, Tippelt G, Lottermoser W (2006) Single crystal X-ray diffraction and temperature dependent 57Fe Mossbauer spectroscopy on the hedenbergite - aegirine (Ca,Na)(Fe2+,Fe3+)Si2O6 solid solution American Mineralogist 91 1271-1292 | | 2006 | synthetic | 0 | 293 |
| 0000336 | Aegirine | Cameron M, Sueno S, Prewitt C T, Papike J J (1973) High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite pyroxene American Mineralogist 58 594-618 | | 1973 | 0 | 297 | |
| 0006825 | Aegirine | Redhammer G J, Amthauer G, Lottermoser W, Treutmann W (2000) Synthesis and structural properties of clinopyroxenes of the hedenbergite CaFeSi2O6 - aegirine NaFeSi2O6 solid-solution series European Journal of Mineralogy 12 105-120 | 2000 | 0 | 293 | ||
| 0006824 | Aegirine | Redhammer G J, Amthauer G, Lottermoser W, Treutmann W (2000) Synthesis and structural properties of clinopyroxenes of the hedenbergite CaFeSi2O6 - aegirine NaFeSi2O6 solid-solution series European Journal of Mineralogy 12 105-120 | 2000 | 0 | 293 | ||
| 0006823 | Aegirine | Redhammer G J, Amthauer G, Lottermoser W, Treutmann W (2000) Synthesis and structural properties of clinopyroxenes of the hedenbergite CaFeSi2O6 - aegirine NaFeSi2O6 solid-solution series European Journal of Mineralogy 12 105-120 | 2000 | 0 | 293 | ||
| 0006822 | Aegirine | Redhammer G J, Amthauer G, Lottermoser W, Treutmann W (2000) Synthesis and structural properties of clinopyroxenes of the hedenbergite CaFeSi2O6 - aegirine NaFeSi2O6 solid-solution series European Journal of Mineralogy 12 105-120 | 2000 | 0 | 293 | ||
| 0006821 | Aegirine | Redhammer G J, Amthauer G, Lottermoser W, Treutmann W (2000) Synthesis and structural properties of clinopyroxenes of the hedenbergite CaFeSi2O6 - aegirine NaFeSi2O6 solid-solution series European Journal of Mineralogy 12 105-120 | 2000 | 0 | 293 | ||
| 0006820 | Aegirine | Redhammer G J, Amthauer G, Lottermoser W, Treutmann W (2000) Synthesis and structural properties of clinopyroxenes of the hedenbergite CaFeSi2O6 - aegirine NaFeSi2O6 solid-solution series European Journal of Mineralogy 12 105-120 | 2000 | 0 | 293 | ||
| 0007464 | Aegirine | Ballet O, Coey J M D, Fillion G, Ghose A, Hewat A W, Regnard J R (1989) Magnetic order in acmite; NaFeSi2O6 Physics and Chemistry of Minerals 16 672-677 | 1989 | 0 | 293 | ||
| 0007425 | Aegirine | Ghose S, Kersten M, Langer K, Rossi G, Ungaretti L (1986) Crystal field spectra and Jahn Teller effect of Mn3+ in clinopyroxene and clinoamphiboles from India Physics and Chemistry of Minerals 13 291-305 | 1986 | 0 | 293 | ||
| 0000337 | Aegirine | Cameron M, Sueno S, Prewitt C T, Papike J J (1973) High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite pyroxene American Mineralogist 58 594-618 | | 1973 | 0 | 673 | |
| 0000338 | Aegirine | Cameron M, Sueno S, Prewitt C T, Papike J J (1973) High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite pyroxene American Mineralogist 58 594-618 | | 1973 | 0 | 873 | |
| 0000339 | Aegirine | Cameron M, Sueno S, Prewitt C T, Papike J J (1973) High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite pyroxene American Mineralogist 58 594-618 | | 1973 | 0 | 1073 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Loading XRD data...
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.369 Å | (90) |
| 4.416 Å | (80) |
| 3.614 Å | (10) |
| 3.188 Å | (50) |
| 2.983 Å | (70) |
| 2.900 Å | (100) |
| 2.792 Å | (10) |
| 2.5408 Å | (50) |
| 2.4701 Å | (60) |
| 2.2530 Å | (10) |
| 2.1995 Å | (10) |
| 2.1200 Å | (30) |
| 2.0943 Å | (20) |
| 2.0162 Å | (20) |
| 1.9840 Å | (5) |
| 1.9350 Å | (10) |
| 1.8818 Å | (10) |
| 1.8263 Å | (5) |
| 1.8052 Å | (10) |
| 1.7293 Å | (60) |
| 1.6590 Å | (5) |
| 1.6341 Å | (5) |
| 1.6120 Å | (50) |
| 1.5920 Å | (50) |
| 1.5377 Å | (10) |
| 1.5290 Å | (10) |
| 1.4671 Å | (20) |
| 1.3975 Å | (60) |
| 1.3283 Å | (20) |
| 1.3021 Å | (40) |
| 1.2687 Å | (30) |
| 1.2289 Å | (20) |
| 1.2212 Å | (10) |
| 1.1992 Å | (20) |
| 1.1622 Å | (10) |
| 1.1540 Å | (5) |
| 1.0691 Å | (10) |
| 1.0621 Å | (20) |
| 1.0550 Å | (30) |
| 1.0401 Å | (10) |
Comments:
ICDD 18-1222 (Narssarssuaq, Greenland). See also ICDD 31-305, 31-1309, 34-185.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3a: Earth’s earliest Hadean crust | >4.50 |
| 7 : Ultramafic igneous rocks | |
| Stage 4a: Earth’s earliest continental crust | >4.4-3.0 |
| 19 : Granitic intrusive rocks | |
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
| 26 : Hadean detrital minerals | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks | |
| 36 : Carbonatites, kimberlites, and related igneous rocks | |
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 39 : High-? metamorphism (blueschist, eclogite, ultrahigh ? facies) | |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) | |
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 51 : Pyrometamorphic minerals (see also #54 and #56) | <0.36 |
Geological Setting:
Common in alkalic igneous rocks, carbonatites, and pegmatites; from regionally metamorphosed schists, gneisses, and iron formations; in blueschist facies rocks, and from sodium metasomatism in granulites; authigenic in some shales and marls.
Type Occurrence of Aegirine
Co-Type Localities:
Synonyms of Aegirine
Other Language Names for Aegirine
Varieties of Aegirine
| Fedorovite | An aegirine with 9-13% Na, etc. and 24% Fe. Originally reported from Monti Ernici, Rome Province, Latium, Italy. |
| Titanium-bearing Aegirine | A Ti4+-bearing variety of aegirine with a TiO2 content up to 10 mass%. |
| Vanadium-bearing Aegirine | A V3+-bearing variety of aegirine. A member of the aegirine-natalyite series with V2O3 content up to 4 mass%. A vanadiferous aegirine was first described by Larsen & Hunt (1913) from Libby, Lincoln Co., Montana, USA. |
Relationship of Aegirine to other Species
Member of:
Other Members of Clinopyroxene Subgroup:
| Aegirine-augite | (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6 | Mon. 2/m : B2/b |
| Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 | Mon. 2/m : B2/b |
| Burnettite | CaVAlSiO6 | Mon. 2/m : B2/b |
| Clinoenstatite | MgSiO3 | Mon. 2/m : P21/b |
| Clinoferrosilite | Fe2+2Si2O6 | Mon. 2/m : P21/b |
| Colomeraite | NaTi3+Si2O6 | Mon. 2/m : B2/b |
| Davisite | CaScAlSiO6 | Mon. 2/m : B2/b |
| Diopside | CaMgSi2O6 | Mon. 2/m : B2/b |
| Esseneite | CaFe3+[AlSiO6] | Mon. 2/m : B2/b |
| Grossmanite | CaTi3+ AlSiO6 | Mon. 2/m : B2/b |
| Hedenbergite | CaFe2+Si2O6 | Mon. 2/m : B2/b |
| Jadeite | Na(Al,Fe3+)Si2O6 | Mon. 2/m : B2/b |
| Jervisite | NaSc3+Si2O6 | Mon. 2/m : B2/b |
| Johannsenite | CaMn2+Si2O6 | Mon. 2/m : B2/b |
| Kanoite | Mn2+MgSi2O6 | Mon. 2/m : P21/b |
| Kosmochlor | NaCrSi2O6 | Mon. 2/m : B2/b |
| Kushiroite | CaAlAlSiO6 | Mon. 2/m : B2/b |
| Namansilite | NaMn3+Si2O6 | Mon. 2/m : B2/b |
| Natalyite | NaV3+Si2O6 | Mon. 2/m : B2/b |
| Omphacite | (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6 | Mon. 2/m |
| Petedunnite | CaZnSi2O6 | Mon. 2/m : B2/b |
| Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 | Mon. 2/m : P21/b |
| Ryabchikovite | CuMgSi2O6 | Mon. 2/m : P21/b |
| Spodumene | LiAlSi2O6 | Mon. 2/m : B2/b |
| Tissintite | (Ca,◻)AlSi2O6 | Mon. 2/m : B2/b |
| 'UM2003-36-SiO:CaNa' | NaCrSi2O6 - CaMgSi2O6 | Mon. 2/m : B2/b |
Forms a series with:
Common Associates
Associations Based on Photo Data:
| 705 photos of Aegirine associated with Microcline | K(AlSi3O8) |
| 540 photos of Aegirine associated with Albite | Na(AlSi3O8) |
| 398 photos of Aegirine associated with Quartz | SiO2 |
| 373 photos of Aegirine associated with Analcime | Na(AlSi2O6) · H2O |
| 363 photos of Aegirine associated with Natrolite | Na2Al2Si3O10 · 2H2O |
| 343 photos of Aegirine associated with Serandite | NaMn2+2Si3O8(OH) |
| 291 photos of Aegirine associated with Zircon | Zr(SiO4) |
| 249 photos of Aegirine associated with Rhodochrosite | MnCO3 |
| 240 photos of Aegirine associated with Catapleiite | Na2Zr(Si3O9) · 2H2O |
| 196 photos of Aegirine associated with Eudialyte | Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2 |
Related Minerals - Strunz-mindat Grouping
| 9.DA. | Colomeraite | NaTi3+Si2O6 |
| 9.DA. | Protoenstatite | Mg2Si2O6 |
| 9.DA. | Ryabchikovite | CuMgSi2O6 |
| 9.DA.05 | Donpeacorite | Mn2+MgSi2O6 |
| 9.DA.05 | Enstatite | Mg2Si2O6 |
| 9.DA.05 | Ferrosilite | Fe2+2Si2O6 |
| 9.DA.10 | Clinoenstatite | MgSiO3 |
| 9.DA.10 | Clinoferrosilite | Fe2+2Si2O6 |
| 9.DA.10 | Kanoite | Mn2+MgSi2O6 |
| 9.DA.10 | Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| 9.DA.15 | Grossmanite | CaTi3+ AlSiO6 |
| 9.DA.15 | Diopside | CaMgSi2O6 |
| 9.DA.15 va | 'Jeffersonite' | Ca(Mn,Zn,Fe)Si2O6 |
| 9.DA.15 | Hedenbergite | CaFe2+Si2O6 |
| 9.DA.15 | Johannsenite | CaMn2+Si2O6 |
| 9.DA.15 | Petedunnite | CaZnSi2O6 |
| 9.DA.15 | Esseneite | CaFe3+[AlSiO6] |
| 9.DA.15 | Kushiroite | CaAlAlSiO6 |
| 9.DA.15 | Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| 9.DA.15 | Davisite | CaScAlSiO6 |
| 9.DA.20 | Aegirine-augite | (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6 |
| 9.DA.20 | Omphacite | (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6 |
| 9.DA.25 | Jadeite | Na(Al,Fe3+)Si2O6 |
| 9.DA.25 | Namansilite | NaMn3+Si2O6 |
| 9.DA.25 | Natalyite | NaV3+Si2O6 |
| 9.DA.25 | Jervisite | NaSc3+Si2O6 |
| 9.DA.25 | Tissintite | (Ca,◻)AlSi2O6 |
| 9.DA.25 | Kosmochlor | NaCrSi2O6 |
| 9.DA.30 | Spodumene | LiAlSi2O6 |
| 9.DA.35 | Hiroseite | FeSiO3 |
Fluorescence of Aegirine
Not fluorescent in UV
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.
Aegirine in petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
Internet Links for Aegirine
mindat.org URL:
https://www.mindat.org/min-31.html
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References for Aegirine
Reference List:
Ström, P. (1821) Undersökning af ett nytt Fossil [Examination of a new Fossil]. Kungliga Svenska vetenskapsakademiens handlingar, S. 3 Vol. 9. 160-163 as Acmite
Berzelius, Jöns Jacob (1821) Tillägg til föregående Afhandling [Addendum to previous paper]. Kungliga Svenska vetenskapsakademiens handlingar, S. 3 Vol. 9. 163-166 as Acmite
Schüller, Karl-Heinz (1958) Das Problem Akmit-Ägirin. Beiträge zur Mineralogie und Petrographie, 6 (2). 112-138 doi:10.1007/bf01084744
Cameron, Maryellen, Sueno, Shigeho, Prewitt, C. T., Papike, and J. J. (1973) High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite. American Mineralogist, 58 (7-8) 594-618
Morimoto, N., Fabries, J., Ferguson, A. K., Ginzburg, I. V., Ross, M., Seifert, F. A., Zussman, J., Aoki, K., Gottardi, G. (1988) Nomenclature of Pyroxenes. Mineralogical Magazine, 52 (367) 535-550 doi:10.1180/minmag.1988.052.367.15
Nestola, Fabrizio, Boffa Ballaran, Tiziana, Liebske, Christian, Bruno, Marco, Tribaudino, Mario (2006) High-pressure behaviour along the jadeite NaAlSi2O6–aegirine NaFeSi2O6 solid solution up to 10 GPa. Physics and Chemistry of Minerals, 33 (6) 417-425 doi:10.1007/s00269-006-0089-7
Nestola, F.; Tribaudino, M.; Boffa Ballaran, T.; Liebske, C.; Bruno, M. (2007) The crystal structure of pyroxenes along the jadeite-hedenbergite and jadeite-aegirine joins. American Mineralogist, 92 (8). 1492-1501 doi:10.2138/am.2007.2540
Raade, Gunnar (2010) Chemical composition of acmite/aegirine intergrowths from Rundemyr, Eiker. Norsk Bergverksmuseum Skrift, 43. 29-34
Ribeiro Da Costa, Isabel, Rodrigues, Pedro C.R., Barriga, Fernando J.A.S., Rona, Peter A., Nunes, Carla D., Vaz, Pedro D. (2014) Colourless aegirine in metamorphic rocks from Bayan Obo (Inner Mongolia): lack of charge transfer transitions as possible explanation. European Journal of Mineralogy, 25 (6) 987-993 doi:10.1127/0935-1221/2013/0025-2283
Localities for Aegirine
Showing 1,856 localities.
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Rundemyr, Øvre Eiker, Buskerud, Norway