Pigeonite
A valid IMA mineral species - grandfathered
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About Pigeonite
Formula:
(CaxMgyFez)(Mgy1Fez1)Si2O6
Where 0.1 ≤ x ≤ 0.4, x + y + z = 1 and y1 + z1 = 1.
This formula is based on the definition by Morimoto et al. (1988).
This formula is based on the definition by Morimoto et al. (1988).
Colour:
Black, brown, greenish brown
Lustre:
Vitreous, Dull
Hardness:
6
Crystal System:
Monoclinic
Member of:
Name:
Named in 1900 by Alexander N. Winchell for the type locality of Pigeon Point, Minnesota, USA.
Type Locality:
Pyroxene Group, Clinopyroxene Subgroup.
A high-temperature mineral, forming mostly above 900°C, and with slow cooling tends to invert to a mixture of augite and orthopyroxene. Thus it is mostly restricted to volcanic and subvolcanic rocks like basalts and dolerites.
Unlike other clinopyroxenes such as augite and diopside, pigeonite has space-group symmetry P21/c at room temperature (at high temperatures it has space group C2/c). The phase-transition temperature depends on Ca and Fe2+ contents, as well as by cation ordering (Camara et al., 2003).
A high-temperature mineral, forming mostly above 900°C, and with slow cooling tends to invert to a mixture of augite and orthopyroxene. Thus it is mostly restricted to volcanic and subvolcanic rocks like basalts and dolerites.
Unlike other clinopyroxenes such as augite and diopside, pigeonite has space-group symmetry P21/c at room temperature (at high temperatures it has space group C2/c). The phase-transition temperature depends on Ca and Fe2+ contents, as well as by cation ordering (Camara et al., 2003).
Unique Identifiers
Mindat ID:
3210
Long-form identifier:
mindat:1:1:3210:6
Classification of Pigeonite

Pigeonite and its relation to other pyroxenes
IMA Classification of Pigeonite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
(Mg,Fe2+,Ca)SiO3
9.DA.10
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
65.1.1.4
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
14.23.1
14 : Silicates not Containing Aluminum
23 : Silicates of Fe, Mg, Ca
14 : Silicates not Containing Aluminum
23 : Silicates of Fe, Mg, Ca
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 |
|---|---|---|
| Pgt | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Pgt | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279. |
| Pgt | 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 |
| Pgt | 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 |
| Pgt | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Pronunciation of Pigeonite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Pigeonite
Vitreous, Dull
Colour:
Black, brown, greenish brown
Streak:
Greyish white
Hardness:
6 on Mohs scale
Cleavage:
Distinct/Good
Optical Data of Pigeonite
Type:
Biaxial (+)
RI values:
nα = 1.683 - 1.722 nβ = 1.684 - 1.722 nγ = 1.704 - 1.752
Max. Birefringence:
δ = 0.021 - 0.030
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.
No measured or calculated 2V is on file for this mineral, so the value used here (16°) is estimated from its recorded refractive indices and optic sign, not from a direct 2V measurement.
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.
No measured or calculated 2V is on file for this mineral, so the value used here (16°) is estimated from its recorded refractive indices and optic sign, not from a direct 2V measurement.
Dispersion:
weak to distinct
Chemistry of Pigeonite
Mindat Formula:
(CaxMgyFez)(Mgy1Fez1)Si2O6
Where 0.1 ≤ x ≤ 0.4, x + y + z = 1 and y1 + z1 = 1.
This formula is based on the definition by Morimoto et al. (1988).
Where 0.1 ≤ x ≤ 0.4, x + y + z = 1 and y1 + z1 = 1.
This formula is based on the definition by Morimoto et al. (1988).
Common Impurities:
Ti,Al,Mn,Na,K,H2O
Crystallography of Pigeonite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P121/c1
Cell Parameters:
a = 9.7 Å, b = 8.95 Å, c = 5.24 Å
β = 108.59°
β = 108.59°
Ratio:
a:b:c = 1.084 : 1 : 0.585
Unit Cell V:
431.18 ų (Calculated from Unit Cell)
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0005003 | Pigeonite | Alvaro M, Nestola F, Ballaran T B, Camara F, Domeneghetti M C, Tazzoli V (2010) High-pressure phase transition of a natural pigeonite American Mineralogist 95 300-311 | ![]() | 2010 | Parana, Brazil | 0.0001 | 293 |
| 0003978 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 293 |
| 0003962 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 293 |
| 0003152 | Pigeonite | Camara F, Carpenter M A, Domeneghetti M C, Tazzoli V (2003) Coupling between non-convergent ordering and transition temperature in the C2/c - P2_1/c phase transition in pigeonite American Mineralogist 88 1115-1128 | ![]() | 2003 | Parana, Brazil | 0 | 293 |
| 0003151 | Pigeonite | Camara F, Carpenter M A, Domeneghetti M C, Tazzoli V (2003) Coupling between non-convergent ordering and transition temperature in the C2/c - P2_1/c phase transition in pigeonite American Mineralogist 88 1115-1128 | ![]() | 2003 | Parana, Brazil | 0 | 293 |
| 0003150 | Pigeonite | Camara F, Carpenter M A, Domeneghetti M C, Tazzoli V (2003) Coupling between non-convergent ordering and transition temperature in the C2/c - P2_1/c phase transition in pigeonite American Mineralogist 88 1115-1128 | ![]() | 2003 | Parana, Brazil | 0 | 293 |
| 0003149 | Pigeonite | Camara F, Carpenter M A, Domeneghetti M C, Tazzoli V (2003) Coupling between non-convergent ordering and transition temperature in the C2/c - P2_1/c phase transition in pigeonite American Mineralogist 88 1115-1128 | ![]() | 2003 | Parana, Brazil | 0 | 293 |
| 0003148 | Pigeonite | Camara F, Carpenter M A, Domeneghetti M C, Tazzoli V (2003) Coupling between non-convergent ordering and transition temperature in the C2/c - P2_1/c phase transition in pigeonite American Mineralogist 88 1115-1128 | ![]() | 2003 | Parana, Brazil | 0 | 293 |
| 0003147 | Pigeonite | Camara F, Carpenter M A, Domeneghetti M C, Tazzoli V (2003) Coupling between non-convergent ordering and transition temperature in the C2/c - P2_1/c phase transition in pigeonite American Mineralogist 88 1115-1128 | ![]() | 2003 | Parana, Brazil | 0 | 293 |
| 0000209 | Pigeonite | Morimoto N, Guven N (1970) Refinement of the crystal structure of pigeonite American Mineralogist 55 1195-1209 | ![]() | 1970 | Isle of Mull, Scotland | 0 | 293 |
| 0010588 | Pigeonite | Morimoto N, Appleman D E, Evans H T (1960) The crystal structures of clinoenstatite and pigeonite Zeitschrift fur Kristallographie 114 120-147 | ![]() | 1960 | Asio Mine, Japan | 0 | 293 |
| 0003986 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 923 |
| 0003985 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 923 |
| 0003984 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 923 |
| 0003983 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 923 |
| 0003982 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 923 |
| 0003981 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 923 |
| 0003980 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 923 |
| 0003979 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 923 |
| 0003971 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 973 |
| 0003970 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 973 |
| 0003969 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 973 |
| 0003968 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 973 |
| 0003967 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 973 |
| 0003966 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 973 |
| 0003965 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 973 |
| 0003964 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 973 |
| 0003963 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 973 |
| 0003992 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 1023 |
| 0003991 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 1023 |
| 0003990 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 1023 |
| 0003989 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 1023 |
| 0003988 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 1023 |
| 0003987 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 1023 |
| 0003977 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 1073 |
| 0003976 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 1073 |
| 0003975 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 1073 |
| 0003974 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 1073 |
| 0003973 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 1073 |
| 0003972 | Pigeonite | Domeneghetti M C, Zema M, Tazzoli V (2005) Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite American Mineralogist 90 1816-1823 | ![]() | 2005 | Parana, Brazil | 0 | 1073 |
| 0005004 | Pigeonite | Alvaro M, Nestola F, Ballaran T B, Camara F, Domeneghetti M C, Tazzoli V (2010) High-pressure phase transition of a natural pigeonite American Mineralogist 95 300-311 | ![]() | 2010 | Parana, Brazil | 0.047 | 293 |
| 0005005 | Pigeonite | Alvaro M, Nestola F, Ballaran T B, Camara F, Domeneghetti M C, Tazzoli V (2010) High-pressure phase transition of a natural pigeonite American Mineralogist 95 300-311 | ![]() | 2010 | Parana, Brazil | 0.984 | 293 |
| 0005006 | Pigeonite | Alvaro M, Nestola F, Ballaran T B, Camara F, Domeneghetti M C, Tazzoli V (2010) High-pressure phase transition of a natural pigeonite American Mineralogist 95 300-311 | ![]() | 2010 | Parana, Brazil | 1.794 | 293 |
| 0005007 | Pigeonite | Alvaro M, Nestola F, Ballaran T B, Camara F, Domeneghetti M C, Tazzoli V (2010) High-pressure phase transition of a natural pigeonite American Mineralogist 95 300-311 | ![]() | 2010 | Parana, Brazil | 3.167 | 293 |
| 0005008 | Pigeonite | Alvaro M, Nestola F, Ballaran T B, Camara F, Domeneghetti M C, Tazzoli V (2010) High-pressure phase transition of a natural pigeonite American Mineralogist 95 300-311 | ![]() | 2010 | Parana, Brazil | 3.172 | 293 |
| 0005009 | Pigeonite | Alvaro M, Nestola F, Ballaran T B, Camara F, Domeneghetti M C, Tazzoli V (2010) High-pressure phase transition of a natural pigeonite American Mineralogist 95 300-311 | ![]() | 2010 | Parana, Brazil | 3.587 | 293 |
| 0005010 | Pigeonite | Alvaro M, Nestola F, Ballaran T B, Camara F, Domeneghetti M C, Tazzoli V (2010) High-pressure phase transition of a natural pigeonite American Mineralogist 95 300-311 | ![]() | 2010 | Parana, Brazil | 3.649 | 293 |
| 0005011 | Pigeonite | Alvaro M, Nestola F, Ballaran T B, Camara F, Domeneghetti M C, Tazzoli V (2010) High-pressure phase transition of a natural pigeonite American Mineralogist 95 300-311 | ![]() | 2010 | Parana, Brazil | 6.409 | 293 |
| 0005012 | Pigeonite | Alvaro M, Nestola F, Ballaran T B, Camara F, Domeneghetti M C, Tazzoli V (2010) High-pressure phase transition of a natural pigeonite American Mineralogist 95 300-311 | ![]() | 2010 | Parana, Brazil | 7.762 | 293 |
| 0005013 | Pigeonite | Alvaro M, Nestola F, Ballaran T B, Camara F, Domeneghetti M C, Tazzoli V (2010) High-pressure phase transition of a natural pigeonite American Mineralogist 95 300-311 | ![]() | 2010 | Parana, Brazil | 9.405 | 293 |
| 0008637 | Pigeonite | Camara F, Carpenter M A, Domeneghetti M C, Tazzoli V (2002) Non-convergent ordering and displacive phase transition in pigeonite: in situ HT XRD study Physics and Chemistry of Minerals 29 331-340 | 2002 | 0 | 298 | ||
| 0003197 | Pigeonite | Nestola F, Tribaudino M, Ballaran T B (2004) High pressure behavior, transformation and crystal structure of synthetic iron-free pigeonite American Mineralogist 89 189-196 | ![]() | 2004 | 0 | 293 | |
| 0007019 | Pigeonite | Merli M, Camara F (2003) Topological analysis of the electron density of the clinopyroxene structure by the maximum entropy method: an exploratory study European Journal of Mineralogy 15 903-911 | 2003 | 0 | 293 | ||
| 0007018 | Pigeonite | Merli M, Camara F (2003) Topological analysis of the electron density of the clinopyroxene structure by the maximum entropy method: an exploratory study European Journal of Mineralogy 15 903-911 | 2003 | 0 | 293 | ||
| 0008137 | Pigeonite | Angel R J, McCammon C A, Woodland A B (1998) Structure, ordering and cation interactions in Ca-free P2_1/c clinopyroxenes Physics and Chemistry of Minerals 25 249-258 | 1998 | 0 | 293 | ||
| 0000248 | Pigeonite | Clark J R, Ross M, Appleman D E (1971) Crystal chemistry of a lunar pigeonite class b data refinement American Mineralogist 56 888-908 | ![]() | 1971 | 0 | 293 | |
| 0008638 | Pigeonite | Camara F, Carpenter M A, Domeneghetti M C, Tazzoli V (2002) Non-convergent ordering and displacive phase transition in pigeonite: in situ HT XRD study Physics and Chemistry of Minerals 29 331-340 | 2002 | 0 | 923 | ||
| 0008639 | Pigeonite | Camara F, Carpenter M A, Domeneghetti M C, Tazzoli V (2002) Non-convergent ordering and displacive phase transition in pigeonite: in situ HT XRD study Physics and Chemistry of Minerals 29 331-340 | 2002 | 0 | 1023 | ||
| 0008640 | Pigeonite | Camara F, Carpenter M A, Domeneghetti M C, Tazzoli V (2002) Non-convergent ordering and displacive phase transition in pigeonite: in situ HT XRD study Physics and Chemistry of Minerals 29 331-340 | 2002 | 0 | 1123 | ||
| 0008641 | Pigeonite | Camara F, Carpenter M A, Domeneghetti M C, Tazzoli V (2002) Non-convergent ordering and displacive phase transition in pigeonite: in situ HT XRD study Physics and Chemistry of Minerals 29 331-340 | 2002 | 0 | 1223 | ||
| 0003198 | Pigeonite | Nestola F, Tribaudino M, Ballaran T B (2004) High pressure behavior, transformation and crystal structure of synthetic iron-free pigeonite American Mineralogist 89 189-196 | ![]() | 2004 | 2.6 | 293 | |
| 0003199 | Pigeonite | Nestola F, Tribaudino M, Ballaran T B (2004) High pressure behavior, transformation and crystal structure of synthetic iron-free pigeonite American Mineralogist 89 189-196 | ![]() | 2004 | 4.5 | 293 | |
| 0003200 | Pigeonite | Nestola F, Tribaudino M, Ballaran T B (2004) High pressure behavior, transformation and crystal structure of synthetic iron-free pigeonite American Mineralogist 89 189-196 | ![]() | 2004 | 6.2 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.0207 Å | (100) |
| 2.9035 Å | (100) |
| 3.2101 Å | (80) |
| 2.9080 Å | (80) |
| 2.5783 Å | (60) |
| 1.6265 Å | (60) |
| 1.4935 Å | (60) |
| 1.3912 Å | (60) |
| 2.1457 Å | (40) |
| 2.0449 Å | (40) |
Comments:
Yumoto, Hakone volcano, Japan. Data from Kuno and Hess (1953).
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 1: Primary nebular phases | 4.567-4.561 |
| 4 : Primary chondrule phases | 4.566–4.561 |
| Stage 2: Planetesimal differentiation and alteration | 4.566-4.550 |
| 5 : Primary asteroid phases | 4.566–4.560 |
| Stage 3a: Earth’s earliest Hadean crust | >4.50 |
| 8 : Mafic igneous rocks | |
| Stage 4a: Earth’s earliest continental crust | >4.4-3.0 |
| 20 : Acidic volcanic rocks | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 37 : Layered igneous intrusions and related PGE minerals | |
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Type Occurrence of Pigeonite
Synonyms of Pigeonite
Other Language Names for Pigeonite
Varieties of Pigeonite
| Ferriferous pigeonite | |
| Intermediate pigeonite | An obsolete name for a pigeonite with at least 35% Mg and 35% Fe. |
| Magnesian pigeonite | An obsolete name for a pigeonite with less than 35% Fe. |
Relationship of Pigeonite to other Species
Member of:
Other Members of Clinopyroxene Subgroup:
| Aegirine | NaFe3+Si2O6 | Mon. 2/m : B2/b |
| 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 |
| 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 |
Common Associates
Associations Based on Photo Data:
| 7 photos of Pigeonite associated with 'Maskelynite' | |
| 6 photos of Pigeonite associated with Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| 4 photos of Pigeonite associated with 'Basaltic shergottite meteorite' | |
| 3 photos of Pigeonite associated with Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| 2 photos of Pigeonite associated with Anorthite | Ca(Al2Si2O8) |
| 2 photos of Pigeonite associated with 'Shergottite meteorite' | |
| 2 photos of Pigeonite associated with Chlorapatite | Ca5(PO4)3Cl |
| 2 photos of Pigeonite associated with Stishovite | SiO2 |
| 2 photos of Pigeonite associated with Liebermannite | KAlSi3O8 |
| 2 photos of Pigeonite associated with Baddeleyite | ZrO2 |
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.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 | Aegirine | NaFe3+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 |
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.
Pigeonite in petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
Internet Links for Pigeonite
mindat.org URL:
https://www.mindat.org/min-3210.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Pigeonite
Reference List:
Dana, Edward S., Ford, William E. (1909) A System of Mineralogy - Second Appendix to the Sixth Edition of Dana's System of Mineralogy. John Wiley & Sons. p.86
Kuno, H., Hess, H. H. (1953) Unit cell dimensions of clinoenstatite and pigeonite in relation to other common clinopyroxenes. American Journal of Science, 251 (10) 741-752 doi:10.2475/ajs.251.10.741
Morimoto, Nobuo, Appleman, Daniel E., Evans., Howard T. (1960) The crystal structures of clinoenstatite and pigeonite. Zeitschrift für Kristallographie, 114 (1). 120-147 doi:10.1524/zkri.1960.114.1-6.120
Morimoto, Nobuo, Tokonami, Masayasu (1969) Oriented exsolution of augite in pigeonite. American Mineralogist, 54 (7-8) 1101-1117
Morimoto, Nobuo, Güven, Necip (1970) Refinement of the crystal structure of pigeonite. American Mineralogist, 55 (7-8) 1195-1209
Clark, Joan R., Ross, Malcolm, Appleman, and Daniel E. (1971) Crystal chemistry of a lunar pigeonite. American Mineralogist, 56 (5-6) 888-908
Turnock, A. C., Lindsley, D. H., Grover, and J. E. (1973) Synthesis and unit cell parameters of Ca-Mg-Fe pyroxenes. American Mineralogist, 58 (1-2) 50-59
Robinson, Peter, Ross, Malcolm, Nord, Gordon L., Smyth, Joseph R., Jaffe, Howard W. (1977) Exsolution lamellae in augite and pigeonite: fossil indicators of lattice parameters at high temperature and pressure. American Mineralogist, 62 (9-10) 857-873
Cameron, Maryellen, Papike, J. J. (1981) Structural and chemical variations in pyroxenes. American Mineralogist, 66 (1-2) 1-50
Cámara, F., Carpenter, M. A., Domeneghetti, M. C., Tazzoli, V. (2002) Non-convergent ordering and displacive phase transition in pigeonite: in situ HT XRD study. Physics and Chemistry of Minerals, 29 (5) 331-340 doi:10.1007/s00269-002-0241-y
Camara, Fernando; Carpenter, Michael A.; Domeneghetti, M. Chiara; Tazzoli, Vittorio (2003) Coupling between non-convergent ordering and transition temperature in the C2/c ↔ P21/c phase transition in pigeonite. American Mineralogist, 88 (7). 1115-1128 doi:10.2138/am-2003-0720
Nestola, Fabrizio, Tribaudino, Mario, Ballaran, Tiziana Boffa (2004) High pressure behavior, transformation and crystal structure of synthetic iron-free pigeonite. American Mineralogist, 89 (1) 189-196 doi:10.2138/am-2004-0122
Alvaro, M., Nestola, F., Ballaran, T. B., Camara, F., Domeneghetti, M. C., Tazzoli, V. (2010) High-pressure phase transition of a natural pigeonite. American Mineralogist, 95 (2) 300-311 doi:10.2138/am.2010.3175
Lindsley, Donald H., Nekvasil, Hanna, Glotch, Timothy D. (2019) Synthesis of pigeonites for spectroscopic studies. American Mineralogist, 104 (4) 615-618 doi:10.2138/am-2019-6869ccbyncnd
Borromeo, Laura; Andò, Sergio; Bersani, Danilo; Garzanti, Eduardo; Gentile, Paolo; Mantovani, Luciana; Tribaudino, Mario (2023) How to identify pigeonite: A Raman and SEM-EDS study of detrital Ca-poor clinopyroxene from continental flood basalts. Chemical Geology, 635. 121610 doi:10.1016/j.chemgeo.2023.121610
Localities for Pigeonite
Showing 387 localities.
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.
Africa | |
| Owocki et al. (2012) |
Algeria | |
| www.lpi.usra.edu (2020) |
| Hutchison et al. (1991) |
| Krot et al. (2004) |
| - (2004, July) |
| Lustrino et al. (2016) |
| www.lpi.usra.edu (2020) |
| Seddiki et al. (2013) |
Antarctica | |
| Meyer (2001) |
| Ruzicka et al. (1999) |
| Swindle (2001) | |
| Semenova et al. (1992, March) | |
| Antarctic Meteorite Working Group (1984) +1 other reference |
| Ikeda Yukio (1988) |
| Itoh et al. (2003) | |
| Satterwhite et al. (2007) +1 other reference |
| A. J. Brearley (1990) |
| Ikeda (1994) | |
| Brearley et al. (1998) | |
| Prinz et al. (1987) +3 other references |
| Antarctic Meteorite Newsletter 3 (3) +2 other references | |
| Meteoritical Bulletin 84 (Aug.2000) | |
| Score et al. (1995) +3 other references |
| Thomson (1974) |
Argentina | |
| Mason B. (1979) |
| Mason (1967) |
Armenia | |
| Nazarov et al. (1993) |
Australia | |
| Lovering (1975) |
| Hensen et al. (1979) |
| Mason (1967) |
| Mason B. (1979) |
| |
| Ikeda et al. (1996) +2 other references |
| Brian Mason (1962) |
| Ruzicka et al. (1999) |
| Floran et al. (1978) |
| R Bottrill 2010 |
| Taheri |
| Bottrill et al. (2008) |
| R Bottrill collection |
| McDougall (1961) |
| Hoatson et al. (1989) |
| G McCall and W Cleverly +1 other reference |
| Taranovic et al. (2022) |
| Fetherston (2010) | |
| Palme et al. (1988) |
| G McCall and W Cleverly +2 other references |
| G McCall and W Cleverly +2 other references | |
| Am Min 67:126-131 | |
| McCall (1966) +2 other references |
| www.meteorites.com.au +1 other reference |
| McCall (1965) +1 other reference |
Bangladesh | |
| Powell (1971) +1 other reference |
Belarus | |
| Mason B. (1979) |
Brazil | |
| Cid et al. (2014) |
| Keil et al. (1978) |
| Gomes et al. (1980) +1 other reference |
| Steele et al. (1976) |
| Atencio et al. (2020) |
| Mason (1967) +1 other reference |
| Pinto et al. (2011) |
| COMIN-CHIARAMONTI et al. (2002) |
Bulgaria | |
| I. Kostov et al. (1964) |
Burkina Faso | |
| Mason (1967) |
Canada | |
| Papezik et al. (1981) |
| Watkinson et al. (1979) |
| Olivier Langelier Collection |
Central African Republic | |
| Hoinkes et al. (1975) |
Chad | |
| Vincent (Sahara du Tchad) +4 other references |
Chile | |
| www.lpi.usra.edu (2010) |
| Kimura et al. (1991) +1 other reference | |
China | |
| Kuiren Wang and Junxin Wang (1987) |
| Martin et al. (2004) +3 other references |
| Brizi et al. (2003) |
| Wankang Huang et al. (1978) |
| Wang et al. (2009) |
| Meteorlogical Bulletin |
Croatia | |
| Balogh et al. (1994) +2 other references |
| Hoinkes et al. (1976) |
Czech Republic | |
| Mason (1962) |
| von Engelhardt (1963) |
Ecuador | |
| Embley et al. (1988) +1 other reference |
Egypt | |
| Rull et al. (2004) |
| Zoheir et al. (2020) |
Finland | |
| Matist |
| Gustafsson et al. (2019) |
| Mason (1967) +1 other reference |
| Vdovykin (1972) |
France | |
| Takeda et al. (1974) +2 other references |
| Christophe Michel-Lévy et al. (1987) |
| Lemanski (n.d.) |
| Chauris (2014) |
| Dodd et al. (1976) |
| |
| Hewins (2014) +1 other reference |
| Mason B. (1979) |
| Mason (1967) |
| Azambre et al. (1988) |
| Dill (2008) |
Germany | |
| Habel (2009) |
| Oehm et al. (1983) +6 other references |
| Ehrenberg et al. (1981) +6 other references | |
| |
| Blaß et al. (1995) |
| El-Kaluoby |
Greenland | |
| Contrib.Mineral Petrol (1981) |
| Vereshchagin et al. (2024) | |
| Whyatt +5 other references |
| Thomassen et al. (2006, February) +1 other reference |
Hungary | |
| Society of Economic Geologists Student Chapter University of Miskolc (2018) |
| Kohút et al. (2019) |
| Sándor et al. (2005) |
| Szakáll & Gatter |
| Szakáll & Gatter |
Iceland | |
| Carmichael et al. (1967) |
India | |
| Ghosh et al. (2000) |
| Vdovykin (1970) +1 other reference |
| Treiman (1985) +2 other references |
| Jones (1990) +1 other reference |
| Mason (1967) +1 other reference |
| Meteoritics & Planetary Science 40 et al. (2005) |
| Mason B. (1979) |
| TRIPATHI et al. (2000) |
| Shukla et al. (1997) |
| Jones (1996) |
| Mason (1967) +2 other references |
| Bhandari et al. (1981) | |
| Töpel-Schadt et al. (1979) +2 other references |
| Vdovykin (1970) |
Indonesia | |
| Mason (1962, May 24th) |
| Abdurrachman et al. (2012) |
Italy | |
| Piccoli et al. (2007) |
| Mason (1962) +1 other reference |
| Tonarini et al. (1996) +9 other references |
| Analized by Marco Ciriotti |
| Pichler (1980) |
| Calanchi et al. (1989) +1 other reference |
| Peccerillo (2017) | |
Japan | |
| Masaru Yamaguchi (1964) |
| Deer et al. (1963) |
| Petrov (n.d.) |
| Masaru Yamaguchi (1964) |
| Kushiro (1964) |
Kazakhstan | |
| Krot et al. (2002) |
Kenya | |
| Coetzee et al. (1959) |
Libya | |
| Grady et al. (2015) |
| Geochimica et Cosmochimica Acta | |
| Meteoritical Bulletin 84 (Aug.2000) +1 other reference | |
| GROSSMAN et al. (2001) | |
| Russell et al. (2003) +3 other references | |
| - (2010) | |
Lithuania | |
| Mason B. (1979) |
| Bukovanská et al. (1991) |
Mali | |
| - (2025) |
Mauritania | |
| - (2010) |
| Lomena et al. (1976) +1 other reference |
Mexico | |
| Brearley et al. (1998) |
| Duke et al. (1967) +1 other reference |
| Cervantes-de La Cruz (2007) |
| Dunn et al. (2010) |
Mongolia | |
| I. Weber & Adolf Bischoff (1999) |
Montserrat | |
| Montserrat Volcano Observatory | |
Morocco | |
| Connolly et al. (2007) +2 other references |
| www.lpi.usra.edu (2013) |
| Bell et al. (2008) |
| Irving +1 other reference |
Namibia | |
| Ewart et al. (1998) |
New Zealand | |
| Patias et al. (2024) |
| Brothers et al. (1981) |
| Brothers et al. (1981) | |
| Brothers et al. (1981) | |
| ganko.eps.nagoya-u.ac.jp (n.d.) |
| Turnbull et al. (2017) |
Nigeria | |
| Mason (1967) +1 other reference |
| T.J. McCoy +2 other references |
| Mücke et al. (2015) |
North Macedonia | |
| Đorđević et al. (2024) |
Northwest Africa Meteorites | |
| Meteoritical Bulletin et al. (2001) | |
| Goodrich (2002) +1 other reference | |
| Russell et al. (2003) +1 other reference | |
| Irving et al. (2003, March) | |
| www2.jpl.nasa.gov/snc/news51.html | |
| - (2004, July) | |
| Moggi-Cecchi et al. (2007) | |
| T. Bunch and J. Wittke | |
| He et al. (2010) | |
| - (2010) | |
| Gu et al. (2025) | |
| ... | |
| The Meteoritical Bulletin | |
| Barrat et al. (2001) | |
| Dr. Vivian Gornitz (2013) +1 other reference | |
| www.lpi.usra.edu (2010) | |
| Met. Bull. | |
| Jambon et al. (2002) +1 other reference | |
| www.lpi.usra.edu (2015) +5 other references | |
| Szurgot et al. (2009) +1 other reference | |
| ... | |
| Irving et al. (2002) | |
Norway | |
| - (2010) |
Oman | |
| Hutchison (1977) +1 other reference |
| Meteoritical Bulletin et al. (2000) |
| Ivanova et al. (2003, March) | |
| Geophysical Research Abstracts | |
| Taylor et al. (2000) |
| Greshake et al. (2001) | |
| Yukio et al. (2006) | |
| Meteoritical Bulletin et al. (2003) | |
| Russell (2005) | |
| Russell et al. (2002) +1 other reference | |
Pakistan | |
| Keil et al. (1965) |
Papua New Guinea | |
| Hewins (1979) |
| Lowder (1970) |
Philippines | |
| MIKLIUS et al. (1991) |
Poland | |
| Włodyka et al. (2015) |
| Lis et al. (1986) |
| Lis et al. (1986) |
| Powell (1971) +1 other reference |
| Mason (1967) +2 other references |
Portugal | |
| Mason B. (1979) |
Romania | |
| www.gl.rhbnc.ac.uk (2003) |
| Szakáll |
| Szakáll et al. (2010) | |
| Fuchs (1968) |
Russia | |
| Sklyarov et al. (2016) |
| Sklyarov et al. (2016) | |
| Spiridonov et al. (2019) +1 other reference |
| Grossman et al. (1986) |
| Hsu et al. (1996) +1 other reference |
| Kokh et al. (2023) |
| Sokol et al. (2019) |
| Frank K. Mazdab collection (see https://www.rockptx.com/fkm-226-to-fkm-250/#FKM-226 for normalized analyses) |
| Korsakov et al. (2019) |
| Rosenshein et al. (2006) |
| Vdovykin (1970) |
| |
| |
| Kaulina et al. (2023) |
| Smol’kin et al. (2023) | |
| Khisina et al. (1982) |
| Коневин et al. (2020) |
| Mason B. (1979) |
| Sklyarov et al. (2023) | |
| Kasatkin et al. (2021) |
| David A. Kring (1987) |
Saint Lucia | |
| Le Guen de Kerneizon et al. (1982) |
Saint Vincent and the Grenadines | |
| Journal of Petrology 10:1721-1764 +1 other reference |
Slovakia | |
| Koděra et al. (1986) |
| Duda et. all. |
South Africa | |
| Simpson (1975) |
| Reid (1974) +1 other reference |
| McDonald et al. (Jock) +1 other reference |
| Cairncross et al. (1995) |
| Kottke-Levin (2011) |
| Barton et al. (1986) |
| Klemd +6 other references |
South Georgia and the South Sandwich Islands | |
| Baker (1978) | |
South Korea | |
| Lee et al. (2022) |
| Kim +7 other references |
South Sudan | |
| Duke et al. (1967) |
Spain | |
| B. Azambre et al. +1 other reference |
| B. Azambre et al. +1 other reference |
| B. Azambre et al. +1 other reference |
| B. Azambre et al. +1 other reference |
| B. Azambre et al. +1 other reference |
| Orejana et al. (2024) |
| Rull et al. (2010) |
| Rull et al. (2010) |
| Dunn et al. (2010) |
| Rull et al. (2010) |
| Weibel (1954) |
Sudan | |
| Barbaro +9 other references |
Sweden | |
| Hjelmqvist (1950) |
| Dodd (June 1974) |
| Sandström et al. (2009) |
| Gatedal (n.d.) | |
| |
Tanzania | |
| Mason (1967) +1 other reference |
Tonga | |
| Bauer (1970) |
| Park et al. (2015) |
| Johnstone (1980) |
Turkmenistan | |
| Ivanova et al. (1992) |
UK | |
| Golley et al. (1995) |
| Ruzicka et al. (1995) +1 other reference |
| ... +1 other reference |
| B.G.J. Upton et al. | |
| Emeleus et al. (1992) |
| ... |
Ukraine | |
| Ian D. Mackinnon & Peter R. Buseck (1980) |
| Mason B. (1979) |
| Mason B. (1979) |
United Arab Emirates | |
| HEZEL et al. (2008) |
USA | |
| Cook et al. (1982) |
| Duke et al. (1967) |
| Cook et al. (1982) | |
| Butler et al. (1938b) +1 other reference |
| Meteoritics & Planetary Science 36 (2001) |
| curator.jsc.nasa.gov (2013) |
| Spry et al. (2022) |
| Gibson et al. (1977) |
| Takeda et al. (1982) |
| Gillson (1926) | |
| Cook (1978) |
| The Leeward Islands. American Journal of Science (70) +6 other references |
| ... +2 other references |
| Powell (1971) |
| Russell et al. (2003) |
| Grossman (1997) |
| Dod et al. (1985) |
| Pavlides et al. (1962) |
| Pavlides et al. (1962) | |
| Pavlides et al. (1962) | |
| Pavlides et al. (1962) | |
| King et al. (1994) |
| Mason (1967) +2 other references |
| King et al. (1994) |
| Dennen |
| Gillson (1926) |
| Heinrich et al. (2004) |
| Heinrich et al. (2004) | |
| Heinrich et al. (2004) |
| Heinrich et al. (2004) | |
| Heinrich et al. (2004) | |
| Heinrich et al. (2004) |
| A. N. Winchell +1 other reference |
| Harvard Museum of Natural History |
| Lee et al. (1995) |
| USGS Open-File Report 89-76 |
| USGS Miscellaneous Field Studies Map ... |
| Corkery (2002) |
| Mason (1967) +2 other references |
| Castor et al. (2004) |
| Castor et al. (2004) |
| |
| adsabs.harvard.edu (n.d.) |
| Northrop et al. (1996) |
| Geochimica et Cosmochimica Acta |
| Northrop et al. (1996) |
| Foshag (1938) +6 other references |
| Morimoto et al. (1969) | |
| Duke et al. (1967) +1 other reference |
| Dunn et al. (2010) |
| Sloto et al. (1994) |
| Lapham et al. (1965) |
| Eckel et al. (1997) | |
| Mayne et al. (2009) |
| Mason (1967) +2 other references |
| Rubin et al. (2005) |
| Jackson et al. (1988) |
| Ferraris et al. (2002) |
| Hewins (1981) +1 other reference |
| Woolley (1987) |
| www.excaliburmineral.com +2 other references |
| Dietrich (1990) |
| Dietrich (1990) | |
| Dietrich (1990) |
| Rocks&Min. 47:596 (1972) | |
| |
| www.uwrf.edu/~wc01 |
| Klewin +1 other reference | |
| Myers et al. (1980) |
| Frost et al. (eds.) |
Uzbekistan | |
| ... |
Vanuatu | |
| Coulon et al. (New Hebrides) |
Western Sahara | |
| - (2010) |
| Meteoritical Society Abstracts (2001) |
Yemen | |
| Zolensky et al. (2003) |
Zimbabwe | |
| Anglo American plc |
162173 Ryugu | |
Mars | |
| Grotzinger et al. (2015) |
| Morrison et al. (2024) |
| Morrison et al. (2024) | |
| Several papers on: Science Express |
| Grotzinger et al. (2015) | |
| Grotzinger et al. (2015) | |
| Grotzinger et al. (2015) +1 other reference | |
| Jackson et al. (2016) | |
| Morrison et al. (2024) |
| Blake et al. (2024) | |
The Moon | |
| Walker et al. (1973) +1 other reference |
| Vinogradov (1971) |
| Clark et al. (1971) |
| Baldridge +3 other references |
| Wu et al. (2026) | |
| Longhi et al. (1974) |
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The
Gåsgruvan Quarry, Persberg ore district, Filipstad, Värmland County, Sweden