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Alkali pyroxene

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Photos of Alkali pyroxene (1207)Recorded Ages and Analyses Discuss Alkali pyroxene

Alkali pyroxene Gallery Search Photos of Alkali pyroxene

Edit Alkali pyroxene Add Synonym Edit CIF structures Clear Cache

Aegirine, etc.

Mount Malosa, Zomba, Southern Region, Malawi

Aegirine

Mount Malosa, Zomba, Southern Region, Malawi

Aegirine-augite, etc.

Laacher See Volcanic Complex, Germany

Aegirine-augite, etc.

Krufter Ofen, Kruft, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany

Aegirine, etc.

Mount Malosa, Zomba, Southern Region, Malawi

Aegirine

Mount Malosa, Zomba, Southern Region, Malawi

Aegirine-augite, etc.

Laacher See Volcanic Complex, Germany

Aegirine-augite, etc.

Krufter Ofen, Kruft, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany

Aegirine, etc.

Mount Malosa, Zomba, Southern Region, Malawi

Aegirine

Mount Malosa, Zomba, Southern Region, Malawi

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About Alkali pyroxeneHide

Synonym of:

Aegirine, Aegirine-augite

A petrological name for the sodium-rich pyroxenes aegirine and aegirine-augite.

Unique IdentifiersHide

Mindat ID:

48005

Long-form identifier:

mindat:1:1:48005:3

Age distributionHide

Recorded ages:

Phanerozoic : 235.9 ± 5 Ma to 42 ± 1 Ma - based on 8 recorded ages.

Chemical AnalysisHide

Oxide wt%:

	1	2	3
SiO₂	51,10 %	52.14 %	52.59 %
TiO₂	0.28 %	0.47 %	0.23 %
ZrO₂	1.30 %	0.06 %
SnO₂	0.12 %
Al₂O₃	1.02 %	0.29 %	0.13 %
Fe₂O₃	15.77 %
FeO	9.62 %
MnO	1.13 %	1.36 %	0.95 %
MgO	0.96 %	4.92 %	7.10 %
CaO	9.72 %	12.14 %	14.08 %
Na₂O	7.66 %	6.99 %	5.69 %
V₂O₃		0.66 %	2.00 %
Fe₂O₃*		16.39 %	12.13 %
FeO*		4.60 %	5.02 %
ZnO		0.06 %	0.03 %
SrO		0.05 %	0.05 %
NiO			0.02 %
Total:	98.58 %	100.13 %	100.02 %

Empirical formulas:

Sample ID	Empirical Formula
2	(Na_0.52Ca_0.48)(Fe³⁺_0.47Mg_0.28Fe²⁺_0.15Mn²⁺_0.04V_0.02Ca_0.02Ti_0.01)[Si_1.99Al_0.01O₆]
3	(Ca_0.57Na_0.42Mn²⁺_0.01)(Mg_0.40Fe³⁺_0.35Fe²⁺_0.16V_0.06Mn²⁺_0.02Ti_0.01)[Si_2.00O₆]

Sample references:

ID	Locality	Reference	Notes
1	Skutesundskjær, Barkevik area, Larvik Commune, Vestfold, Norway	Larsen, Alf Olav, Raade, Gunnar (1997) Pyroksener fra Oslofeltets syenittpegmatitter [Pyroxenes from the syenite pegmatites of the Oslo Region]. Norsk Bergverksmuseum Skrift, 12. 16-21	Contains 68ppm Li
2	North Wilson pit, Union Carbide Mine, Wilson Springs, Garland County, Arkansas, USA	Frank K. Mazdab collection; sample FKM-192; https://www.rockptx.com/fkm-176-to-fkm-200/#FKM-192	average of 2 analyses of patchy "higher z" zones in abundant aegirine-augite, in wollastonite. Normalized to ∑(cations) = 4. *Fe3+/∑Fe calculated by charge balance.
3	" "	Frank K. Mazdab collection; sample FKM-192; https://www.rockptx.com/fkm-176-to-fkm-200/#FKM-192	average of 2 analyses of the main "lower z" portions of abundant aegirine-augite, in wollastonite. Normalized to ∑(cations) = 4. *Fe3+/∑Fe calculated by charge balance.

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	Locality	Temp (K)
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		297
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		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		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		1073
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	293
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	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	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	298
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	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	293
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	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	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	298
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	298
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	293
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	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		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		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		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		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		293
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		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		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		293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Aegirine'
loop_
_publ_author_name
'Cameron M'
'Sueno S'
'Prewitt C T'
'Papike J J'
_journal_name_full 'American Mineralogist'
_journal_volume 58 
_journal_year 1973
_journal_page_first 594
_journal_page_last 618
_publ_section_title
;
 High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite,
 spodumene, and ureyite
 T = 24 C
 pyroxene
;
_database_code_amcsd 0000336
_chemical_formula_sum 'Si2 Fe Na O6'
_cell_length_a 9.658
_cell_length_b 8.795
_cell_length_c 5.294
_cell_angle_alpha 90
_cell_angle_beta 107.42
_cell_angle_gamma 90
_cell_volume 429.059
_exptl_crystal_density_diffrn      3.576
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Si   0.29050   0.08940   0.23510
Fe1   0.00000   0.89890   0.25000
Na2   0.00000   0.29990   0.25000
O1   0.11410   0.07840   0.13800
O2   0.35820   0.25580   0.30010
O3   0.35180   0.00790   0.01180
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Si 0.00215 0.00286 0.00498 -0.00033 -0.00068 -0.00002
Fe1 0.00353 0.00337 0.00591 0.00000 -0.00045 0.00000
Na2 0.01458 0.00741 0.01072 0.00000 -0.00281 0.00000
O1 0.00250 0.00486 0.00600 -0.00057 -0.00125 0.00027
O2 0.00572 0.00333 0.00967 -0.00218 0.00038 0.00000
O3 0.00460 0.00745 0.00662 0.00070 0.00002 -0.00191