Dickite
A valid IMA mineral species - grandfathered
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About Dickite
Formula:
Al2(Si2O5)(OH)4
Colour:
White, or tinted by impurities
Hardness:
2 - 2½
Specific Gravity:
2.60
Crystal System:
Monoclinic
Member of:
Name:
Named after Allan Brugh Dick (31 May 1833, Edinburgh, Scotland - 12 June 1926, Hampstead, London, UK), Scottish metallurgical chemist, who first described the species.
Type Locality:
Polymorph of:
Kaolinite-Serpentine Group.
A secondary mineral usually of hydrothermal origin in conjunction with veins, derived in part from the alteration of aluminosilicate minerals; also occurs as an authigenic sedimentary phase.
de Ligny and Navrotsky (1999) showed that kaolinite is the thermodynamically stable phase and the polymorphs dickite, halloysite and nacrite are metastable phases mainly crystallising due to kinetic reasons.
A secondary mineral usually of hydrothermal origin in conjunction with veins, derived in part from the alteration of aluminosilicate minerals; also occurs as an authigenic sedimentary phase.
de Ligny and Navrotsky (1999) showed that kaolinite is the thermodynamically stable phase and the polymorphs dickite, halloysite and nacrite are metastable phases mainly crystallising due to kinetic reasons.
Unique Identifiers
Mindat ID:
1287
Long-form identifier:
mindat:1:1:1287:0
Similar Names
| Dakeite | A synonym of Schröckingerite | |
| Deeckeite | (H,K,Na)2(Mg,Ca)(Al,Fe)2Si10O25 · 9H2O | |
| Dukeite | A valid IMA mineral species | Bi243+Cr86+O57(OH)6 · 3H2O |
IMA Classification of Dickite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Al2Si2O5(OH)4
First published:
1930
Classification of Dickite
9.ED.05
9 : SILICATES (Germanates)
E : Phyllosilicates
D : Phyllosilicates with kaolinite layers composed of tetrahedral and octahedral nets
9 : SILICATES (Germanates)
E : Phyllosilicates
D : Phyllosilicates with kaolinite layers composed of tetrahedral and octahedral nets
Dana 7th ed.:
71.1.1.1
71.1.1.1
71 : PHYLLOSILICATES Sheets of Six-Membered Rings
1 : Sheets of 6-membered rings with 1:1 layers
71 : PHYLLOSILICATES Sheets of Six-Membered Rings
1 : Sheets of 6-membered rings with 1:1 layers
15.6
15 : Silicates of Aluminum
15 : Silicates of Aluminum
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 |
|---|---|---|
| Dck | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Dck | 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 |
| Dck | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
| Dck | Warr (2020) | Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30 |
Physical Properties of Dickite
Transparency:
Transparent
Comment:
Lustre satiny.
Colour:
White, or tinted by impurities
Hardness:
2 - 2½ on Mohs scale
Tenacity:
Flexible
Cleavage:
Perfect
On {001}, perfect.
On {001}, perfect.
Density:
2.60 g/cm3 (Measured) 2.62 g/cm3 (Calculated)
Optical Data of Dickite
Type:
Biaxial (+)
RI values:
nα = 1.5608 - 1.564 nβ = 1.561 - 1.566 nγ = 1.566 - 1.570
2V:
Measured: 50° to 80°, Calculated: 72° to 80°
Max. Birefringence:
δ = 0.005 - 0.006
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:
Low (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:
none
Chemistry of Dickite
Mindat Formula:
Al2(Si2O5)(OH)4
Element Weights:
Elements listed:
Common Impurities:
Ti,Fe,Mg,Ca,Na,K
Crystallography of Dickite
Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Space Group:
Bb
Cell Parameters:
a = 5.150 Å, b = 8.940 Å, c = 14.424 Å
β = 96.8°
β = 96.8°
Ratio:
a:b:c = 0.576 : 1 : 1.613
Unit Cell V:
659.42 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals pseudohexagonal, elongated [100] at times. As aggregates of platelets resembling books. Masses of microscopic crystals.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
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Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
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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) |
|---|---|---|---|---|---|---|---|
| 0014797 | Dickite | Joswig W, Drits V A (1986) The orientation of the hydroxyl groups in dickite by X-ray diffraction Neues Jahrbuch fur Mineralogie, Monatshefte 1986 19-22 | 1986 | Kilantyubinsk mine, USSR | 0 | 293 | |
| 0012236 | Dickite | Bish D L, Johnston C T (1993) Rietveld refinement and Fourier-transform infrared spectroscopic study of the dickite structure at low temperature Clays and Clay Minerals 41 297-304 | 1993 | St. Claire, Pennsylvania, USA | 0 | 12 | |
| 0003170 | Dickite | Dera P, Prewitt C T, Japel S, Bish D L, Johnston C T (2003) Pressure-controlled polytypism in hydrous layered materials American Mineralogist 88 1428-1435 | ![]() | 2003 | 0 | 293 | |
| 0000126 | Dickite | Bailey S W (1963) Polymorphism of the kaolin minerals American Mineralogist 48 1196-1209 | ![]() | 1963 | 0 | 293 | |
| 0003171 | Dickite | Dera P, Prewitt C T, Japel S, Bish D L, Johnston C T (2003) Pressure-controlled polytypism in hydrous layered materials American Mineralogist 88 1428-1435 | ![]() | 2003 | 4.1 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.15 Å | (100) |
| 4.12 Å | (70) |
| 3.80 Å | (60) |
| 3.58 Å | (100) |
| 2.51 Å | (50) |
| 2.33 Å | (90) |
| 1.975 Å | (50) |
| 1.49 Å | (50) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3b: Earth’s earliest hydrosphere | >4.45 |
| 16 : Low-? aqueous alteration of Hadean subaerial lithologies (see also #23) | |
| Near-surface Processes | |
| 28 : Photo-alteration, pre-biotic | |
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Geological Setting:
Usually of hydrothermal origin in conjunction with veins, derived in part from the alteration of aluminosilicate minerals; also occurs as an authigenic sedimentary phase.
Type Occurrence of Dickite
Place of Conservation of Type Material:
No designated type materil.
Synonyms of Dickite
Pholerite (in part)
Other Language Names for Dickite
Varieties of Dickite
| Changhua Stone | A dense yellow variety of dickite, which is used for carving. It usually contains small amounts of alunite as an impurity. |
| Gaoshan Stone | A dense variety of dickite with red spots of hematite, which is used for carving. It also contains quartz and pyrophyllite as minor impurities. The Chinese consider this material as a variety of Shoushan stone, although true Shoushan stone mainly consists... |
| Heijin seal stone | sulfur-rich, dickite-dominant jade Two-stage genetic model for the evolution of “Heijin” stone: Stage I (Sulfide Precipitation): During the initial phase of volcanic exhalation, magmatic fluids enriched in H2S and SO2 created an acidic-reducing envir... |
| Yellow Seal Stone | A yellow stone from northern Laos that is used in carving. The main composition of the yellow seal stones from northern Laos is dickite. The impurity composition includes hematite, anatase, barite, diaspore and pyrite. The mineral composition indicates th... |
Relationship of Dickite to other Species
Member of:
Other Members of Kaolinite Subgroup:
| Halloysite | Al2Si2O5(OH)4 · n(H2O) | Mon. m : Bb |
| Nacrite | Al2(Si2O5)(OH)4 | Mon. m : Bb |
Common Associates
Associations Based on Photo Data:
| 91 photos of Dickite associated with Azurite | Cu3(CO3)2(OH)2 |
| 68 photos of Dickite associated with Quartz | SiO2 |
| 41 photos of Dickite associated with Pyrite | FeS2 |
| 38 photos of Dickite associated with Dolomite | CaMg(CO3)2 |
| 37 photos of Dickite associated with Calcite | CaCO3 |
| 21 photos of Dickite associated with Chalcopyrite | CuFeS2 |
| 20 photos of Dickite associated with Malachite | Cu2(CO3)(OH)2 |
| 16 photos of Dickite associated with Siderite | FeCO3 |
| 16 photos of Dickite associated with Chalcocite | Cu2S |
| 16 photos of Dickite associated with Fluorite | CaF2 |
Related Minerals - Strunz-mindat Grouping
| 9.ED. | 'Clinochrysotile' | Mg3(Si2O5)(OH)4 |
| 9.ED.05 | Nacrite | Al2(Si2O5)(OH)4 |
| 9.ED.05 | Kaolinite | Al2(Si2O5)(OH)4 |
| 9.ED.05 | Odinite | (Fe,Mg,Al,Fe,Ti,Mn)2.4((Si,Al)2O5)(OH)4 |
| 9.ED.10 | Halloysite | Al2Si2O5(OH)4 · n(H2O) |
| 9.ED.10 | Hisingerite | Fe3+2(Si2O5)(OH)4 · 2H2O |
| 9.ED.10 | 'Hydrohalloysite' | Al2Si2O5(OH)4 · 2H2O |
| 9.ED.15 | Antigorite | Mg3(Si2O5)(OH)4 |
| 9.ED.15 | Brindleyite | (Ni,Al)3(Si,Al)2O5(OH)4 |
| 9.ED.15 | Fraipontite | (Zn,Al)3((Si,Al)2O5)(OH)4 |
| 9.ED.15 | Népouite | Ni3Si2O5(OH)4 |
| 9.ED.15 | Pecoraite | Ni3(Si2O5)(OH)4 |
| 9.ED.15 | Guidottiite | Mn2Fe3+(Fe3+SiO5)(OH)4 |
| 9.ED.15 | Lizardite | Mg3(Si2O5)(OH)4 |
| 9.ED.15 | Berthierine | (Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4 |
| 9.ED.15 | Kellyite | Mn2+2Al(AlSiO5)(OH)4 |
| 9.ED.15 | Cronstedtite | Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4 |
| 9.ED.15 | Caryopilite | Mn2+3Si2O5(OH)4 |
| 9.ED.15 | Amesite | Mg2Al(AlSiO5)(OH)4 |
| 9.ED.15 | Greenalite | (Fe2+,Fe3+)2-3Si2O5(OH)4 |
| 9.ED.15 | Manandonite | Li2Al4(Si2AlB)O10(OH)8 |
| 9.ED.20 | Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| 9.ED.20 | Neotocite | (Mn,Fe)SiO3 · H2O (?) |
| 9.ED.20 | Allophane | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| 9.ED.20 | Imogolite | Al2SiO3(OH)4 |
| 9.ED.25 | Bismutoferrite | Fe3+2Bi(SiO4)2(OH) |
| 9.ED.25 | Chapmanite | Fe3+2Sb3+(Si2O5)O3(OH) |
| 9.ED.30 | 'Pianlinite' | Al2Si2O6(OH)2 |
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.
Dickite in petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
Internet Links for Dickite
mindat.org URL:
https://www.mindat.org/min-1287.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 Dickite
Reference List:
Ross, Clarence S., Kerr, Paul F. (1930) Dickite, a kaolin mineral. American Mineralogist, 15 (1) 34-39
Gruner, John W. (1932) The Crystal Structure of Dickite. Zeitschrift für Kristallographie, 83 (1). 394-404 doi:10.1524/zkri.1932.83.1.394
Newnham, Robert E. (1961) A refinement of the dickite structure and some remarks on polymorphism in kaolin minerals. Mineralogical Magazine and Journal of the Mineralogical Society, 32 (252) 683-704 doi:10.1180/minmag.1961.032.252.03
Bailey, S. W. (1963) Polymorphism of the kaolin minerals. American Mineralogist, 48 (11-12) 1196-1209
Sen Gupta, P. K., Schlemper, E. O., Johns, W. D., Ross, Fred (1984) Hydrogen Positions in Dickite. Clays and Clay Minerals, 32 (6). 483-485 doi:10.1346/ccmn.1984.0320607
Bish, David L. (1993) Rietveld Refinement and Fourier-Transform Infrared Spectroscopic Study of the Dickite Structure at Low Temperature. Clays and Clay Minerals, 41 (3) 297-304 doi:10.1346/ccmn.1993.0410304
Johnston, Clifford T., Helsen, Jozef, Schoonheydt, Robert A., Bish, David L., Agnew, Stephen F. (1998) Single-crystal Raman spectroscopy study of dickite. American Mineralogist, 83 (1) 75-84 doi:10.2138/am-1998-1-208
de Ligny, Dominique; Navrotsky, Alexandra (1999) Energetics of kaolin polymorphs. American Mineralogist, 84 (4). p.506-516. doi:10.2138/am-1999-0404
Farmer, V.C. (2000) Transverse and longitudinal crystal modes associated with OH stretching vibrations in single crystals of kaolinite and dickite. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 56 (5) 927-930 doi:10.1016/s1386-1425(99)00182-1
Balan, Etienne, Lazzeri, Michele, Saitta, A. Marco, Allard, Thierry, Fuchs, Yves, Mauri, Francesco (2005) First-principles study of OH-stretching modes in kaolinite, dickite, and nacrite. American Mineralogist, 90 (1) 50-60 doi:10.2138/am.2005.1675
Zamama, M.; Berraho, M. (2007) The relation between symmetry and the FTIR spectra of the kaolinite and dickite. Acta Crystallographica Section A Foundations of Crystallography, 63 (a1). p.s225. doi:10.1107/s0108767307094871
Localities for Dickite
Showing 935 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.
Afghanistan | |
| Orris et al. (2002) |
| Orris et al. (2002) |
| Orris et al. (2002) |
| Orris et al. (2002) | |
Algeria | |
| Singer et al. (2009) |
Arctic Ocean | |
| Marques et al. (2020) |
Argentina | |
| Singer et al. (2008) |
| Proffett (2003) +1 other reference | |
| PUTZ +1 other reference |
| PUTZ +1 other reference | |
| Padrón de Minas de la Provincia de Chubut (2005) |
| MAIZA +2 other references | |
| Slater (2016) |
| MAIZA +2 other references |
| Grecco et al. (2012) |
| MAIZA +2 other references |
| MAIZA +2 other references |
| Zwahlen et al. (2014) |
| Perelló et al. (2023) |
| Sillitoe et al. (2019) | |
| Gallard-Esquivel et al. (2018) |
| Jovic et al. (2011) |
| Vidal et al. (2016) |
| Smith (2009) |
Armenia | |
| Kolpakova et al. (2001) |
| Moritz et al. (2016) |
| Moritz et al. (2016) | |
| Singer et al. (2008) |
| Moritz et al. (2016) +1 other reference |
| Moritz et al. (2016) +1 other reference |
| Moritz et al. (2016) | |
Australia | |
| Downes et al. (2004) |
| R. Bottrill | |
| Ashley et al. (1997) |
| Quan et al. (2025) |
| Quan et al. (2025) | |
| Quan et al. (2025) |
| Quan et al. (2025) | |
| Ashley et al. (2004) |
| Gilligan et al. (1992) |
| Gilligan et al. (1992) |
| Hurtig et al. (2014) |
| Nethery et al. (1998) |
| Harris et al. (2003) | |
| Corral et al. (2019) |
| - (n.d.) +1 other reference | |
| Corral et al. (2019) | |
| Corral et al. (2019) | |
| Sahlström et al. (2016) +2 other references | |
| Corral et al. (2019) | |
| Corral et al. (2019) | |
| Corral et al. (2019) | |
| Gordon et al. (2014) |
| Francis (2010) |
| Nicolson et al. (2017) | |
| Hong et al. (2023) | |
| Noble et al. (1983) +1 other reference |
| Sorrell (n.d.) |
| Bottrill et al. (2008) |
| Bottrill (2018) |
| Sorrell (n.d.) | |
| Bottrill et al. (2008) |
| Bottrill et al. (2010) |
| |
| |
Austria | |
| Niedermayr et al. (1995) |
| Pichler (2009) |
| Pichler (2009) |
| Puttner (1994) |
| Hiden (1997) |
| Niedermayr et al. (1995) |
| Niedermayr et al. (1995) |
| Niedermayr et al. (1995) | |
| A. Strasser (2011) |
| Brandstätter et al. (2013) | |
| Kolitsch et al. (2014) |
| Strasser (1989) |
| Strasser (1989) |
| Happich (1985) +1 other reference |
| Postl (1994) |
| Leikauf (2006) +1 other reference | |
| www.markasit070752.ws24.cc (n.d.) |
| www.markasit070752.ws24.cc (n.d.) |
Azerbaijan | |
| Mansurov et al. (2018) |
Belgium | |
| Hatert et al. (2002) |
| Leon Hupperichs collection |
| Hatert et al. (2002) |
| Hatert et al. (2002) |
| Hatert et al. (2002) |
| Hatert et al. (2002) | |
| Hatert et al. (2002) | |
| Hatert et al. (2002) | |
| Hatert et al. (2002) |
| Hatert et al. (2002) | |
| Blondieau et al. (2017) |
| Michel Bloindieau | |
| Fransolet et al. (1978) +2 other references |
| José Dehove collection. |
| Blondieau (2005) |
| Etienne Mans collection. |
| Blondieau et al. (2012) |
Bolivia | |
| Kempff et al. (La Paz, 2009) |
| Alfonso et al. (2025) |
| Kempff et al. (La Paz, 2009) |
| Wilson (2001) |
| アルセオスバルト (1989) +1 other reference |
| Jiménez-Franco et al. (2018) +1 other reference |
| Jiménez-Franco et al. (2018) | |
| Salomon Rivas y Federico Ahlfeld (1998) |
| Salomon Rivas y Federico Ahlfeld (1998) | |
| Dill (1998) | |
| PXRD by John Attard |
| Federico Ahlfeld and Alejandro Schneider-Scherbina (1964) |
| Federico Ahlfeld and Alejandro Schneider-Scherbina (1964) |
| Osvaldo R. Arce Burgoa (2007) +1 other reference |
| Dr Fritz Berndt collection (not analyzed) |
| Kempff et al. (La Paz, 2009) | |
| Sillitoe et al. (1998) |
Brazil | |
| Bastos Neto et al. (2009) |
| Atencio et al. (2004) |
Bulgaria | |
| Hikov et al. (2011) |
| Moritz et al. (2004) |
| Singer et al. (2008) +2 other references |
| Jana Kuncheva et al. (2022) +1 other reference |
| Hikov (2004) +1 other reference | |
| HIKOV et al. (APS) +1 other reference |
| Georgieva +3 other references |
| Kalchev et al. (2026) | |
Canada | |
| Wheatley et al. (2006) |
| Peatfield (n.d.) |
| albite alunite andalusite andesine ... |
| Singer et al. (2008) |
| Singer et al. (2008) |
| Singer et al. (2008) |
| Duuring et al. (2009) |
| Duuring et al. (2009) +1 other reference | |
| Grice et al. (1977) |
| personal correspondence with Giles Peatfield (see comments in description) |
| Adex Mining |
| Sparkes et al. (2016) |
| O'Reilly et al. (1982) |
| Avalon Advanced Materials Inc. |
| Noront Resources Ltd. |
| Tarassoff et al. (2006) |
| Nadeau et al. (2015) |
| Reid et al. (2016) |
| Adlakha et al. (2013) +1 other reference | |
| Cloutier et al. (2009) | |
| Knipping (1974) | |
| Boulanger (2012) | |
| gac.esd.mun.ca (n.d.) | |
| Boulogne et al. (2026) | |
Chile | |
| powder xrd at NMBGMR by Patrick Haynes (volunteer) |
| Ossandón C. et al. (2001) |
| Virmond et al. (2026) | |
| Antofagasta plc |
| Gröpper et al. (1991) |
| Oviedo et al. (1991) |
| Thompson et al. (2004) +1 other reference |
| Singer et al. (2008) | |
| Lohmeier et al. (2025) |
| Lohmeier et al. (2022) | |
| Lohmeier et al. (2025) | |
| Singer et al. (2008) |
| Deyell et al. (2005) +1 other reference | |
| Escolme et al. (2020) |
| Teck Resources Limited |
| Deyell et al. (2005) |
| Singer et al. (2008) |
| Anglo American plc |
| - (2003) | |
| - (2003) +1 other reference | |
| Singer et al. (2008) | |
China | |
| Leifu Ren (1988) |
| Zheng et al. (2023) | |
| [var: Gaoshan Stone] Tao Chen et al. (2008) | |
| Zhu Yulin (2000) +1 other reference | |
| Zhu Yulin (2000) |
| Chen et al. (2019) |
| Duan et al. (2022) | |
| Tianjun Gao and Rensheng Huang (1998) | |
| Tianjun Gao and Rensheng Huang (1998) +1 other reference | |
| Chen et al. (2019) +1 other reference | |
| Tianjun Gao and Rensheng Huang (1998) +2 other references | |
| Wang et al. (2024) +1 other reference | |
| Jinzhang Zhang (2013) +2 other references | |
| Zijin Mining Group Company Limited | |
| Jinyan Yao (1994) |
| Jinzhang Zhang (2013) | |
| Jiajun Liu and Minghua Zheng (1994) +2 other references |
| Huaying Liang et al. (2007) +1 other reference |
| Jinyan Yao (1994) |
| Shixian Liu (1983) |
| Jianjin Cao (2000) |
| Lin Niu (1994) |
| Xinyu Cao and Tongjiang Tang (1986) |
| Luo et al. (2026) | |
| Josef Vajdak (2008) |
| Zou et al. (2022) |
| www.portergeo.com.au (2007) |
| Peters et al. (2007) |
| Yu Chen et al. (1984) |
| Zhang Zhong et al. (1998) |
| Kehua Yin (2009) |
| Shande Zhang (1985) |
| Wang et al. (2024) |
| Wang et al. (2025) |
| Zhu et al. (2024) +1 other reference |
| Qin et al. (2022) |
| Chuanyi Yang (1985) +1 other reference | |
| Guangmo Liu and Houming Jian (1983) |
| Liqing Zhao et al. (2002) |
| Zheng et al. (2025) |
| Lijun Guo et al. (2002) +2 other references |
| Jidong Guan and Xiaohong Chai (2004) +1 other reference |
| Dahlkamp (2009) +1 other reference |
| Singer et al. (2002) |
| Chuanming Li (1986) |
| Rengui Wu and Dagan Yu (2000) |
| Dahlkamp (2009) |
| Dahlkamp (2009) | |
| Wang et al. (2026) | |
| Zheng Xia and Ningke Zhang (1986) |
| Dahlkamp (2009) |
| Wenwei Lin (1987) |
| Shihong Tian et al. (2009) |
| Shihong Tian et al. (2009) | |
| Defeng Hui and Naiwu Zhu (2001) +2 other references |
| Yuling Xie et al. (2000) | |
| Zhou et al. (2025) |
| Lizi Chen et al. (2011) |
| Fuxin Zhang and Jianqin Ma (1999) +1 other reference | |
| Fuxin Zhang and Ping Shen (1996) +1 other reference | |
| Zeng Qingdong et al. (2002) |
| Hao et al. (2024) |
| Bingwen Jia and Linshan Hou (1987) |
| wrgis.wr.usgs.gov (2004) |
| wrgis.wr.usgs.gov (2004) | |
| Su Sun (1993) |
| De'an Zhu (1995) +2 other references | |
| De'an Zhu (1995) | |
| Wang et al. (2025) |
| Jin-Xie; Ju-Tang; Zhi-Liu; Qing-Sun; Li-Yu; Chang-Yuan; Xu-Yan; Xiao-Zhao; Qing-Yin; Kang (2026) | |
| Zheng et al. (2025) |
| Liu et al. (2024) | |
| WANG et al. (2014) +2 other references | |
| Yang et al. (2022) +1 other reference | |
| Zengqian Hou et al. (2007) |
| Wang et al. (2026) |
| Bingyu Zhu et al. (2009) |
| Long Xiao et al. (2002) +1 other reference | |
| Pin'an Wang (2001) |
| Zhusen Yang et al. (2000) +1 other reference |
| Mao et al. (2024) |
| Miao et al. (2026) |
| Miao et al. (2026) | |
| [var: Changhua Stone] Biao Fang et al. (2008) |
| [var: Heijin seal stone] Yuan et al. (2026) | |
| Jianji Tian et al. (2010) |
| Wenqing Liu et al. (1987) |
| Shen Zhongyue and Ye Ying (1996) |
| Zhou et al. (2022) +1 other reference |
| Zhou et al. (2022) | |
| Bao et al. (2026) | |
Colombia | |
| Lesage et al. (2013) |
| González-Durán et al. (2019) |
Czech Republic | |
| Sýkorová et al. (2016) |
| Litochleb et al. (2000) | |
| Žáček et al. (1995) | |
| Petr Paulis (2003) | |
| Žáček et al. (1992) | |
| Povondra et al. (eds.) +1 other reference |
| - (n.d.) |
| Hloušek et al. (2002) | |
| Sejkora et al. (2006) |
| Sejkora et al. (2006) |
| Hanus (2017) |
| Krejčí Kotlánová et al. (2024) |
| Sejkora (1998) | |
| Sejkora et al. (2013) |
Ecuador | |
| Schütte et al. (2012) |
| Díaz Castro et al. (2025) |
| Singer et al. (2008) |
Europe | |
| Jahn (2002) |
| www.geologija-revija.si (n.d.) | |
Finland | |
| Joel Dyer collection |
| Joel Dyer collection |
France | |
| • Martin et al. (2004) |
| De Ascenção Guedes (2013) +1 other reference |
| De Ascenção Guedes et al. (2012) |
| R. Pierrot |
| de la Paix Izerumugaba et al. (2026) |
| |
| Favreau (n.d.) |
| Henriot et al. (1998) |
| Queneau (n.d.) |
| BERBAIN et al. (2010) |
| Berbain et al. (2007) |
| Moëlo et al. (2006) |
| Georges FAVREAU collection & EDX ... +1 other reference |
Georgia | |
| Bukiya et al. (1971) |
| Gugushvili et al. (2002) |
| Gruzdev et al. (1975) +2 other references |
| Kekelia et al. (2008) | |
Germany | |
| Walenta (1992) |
| Wittern (2001) |
| |
| Weiß (1990) |
| Wittern (2001) |
| Weiß (1990) |
| Wittern (2001) |
| Henrich et al. (2019) |
| 54 +1 other reference |
| Wittern (2001) |
| www.mineralienatlas.de (2025) |
| Maas (1977) |
| Graf et al. (1982) |
| Vetter et al. (1993) |
| Weiß (1990) |
| Weiß (1990) |
| Weiß (1990) +1 other reference |
| Weiß (1990) |
| |
| Weiß (1990) |
| Weiß (1990) |
| Vetter (1991) |
| Henrich (2007) |
| Graf (1991) |
| Graf (1991) | |
| Müller (2013) |
| Krupp (1989) |
| Lapis 33 (12) |
| Graf (1991) |
| Gerhard Möhn collection |
| Weiß (1990) |
| Weiß (1990) |
| |
| Weiß (1990) |
| XRD by Dr. G. Müller |
| in the collection of Christof Schäfer |
| Möhn et al. (07/2020) |
| Thomas Witzke analysis and collection | |
| Lapis 30 (7/8) | |
| Wittern (2001) |
| B. Gottesmann: Dickit aus Altenberg/Sachsen. Zeitschrift fur Geologische Wissenschaften (9) +1 other reference |
| Wittern (2001) |
| Witzke et al. (1998) |
| Witzke et al. (1998) | |
| Hanneberg et al. (2009) +1 other reference |
| Ullrich (2018) |
Greece | |
| Rieck et al. (2022) |
| Skarpelis (1999) |
| - (n.d.) |
| Alteration et al. (Sappes) +1 other reference | |
| Papoulis et al. (2005) |
| Grosche et al. (2023) |
Honduras | |
| Mattioli et al. (2014) |
Hungary | |
| |
| |
| Sándor et al. (2005) |
| Koch (1985) | |
| Koch (1985) |
| |
| |
| Földessy et al. (2008) |
| Mecsek-Oko | |
| Szakáll et al. (1996) | |
India | |
| Deans et al. (1972) +9 other references |
| Nayak et al. (2024) |
| Raju +1 other reference |
Indonesia | |
| Mulja et al. (2022) |
| Idrus et al. (2015) |
| www.pdac.ca (2003) |
| van Leeuwen et al. (1994) |
| Scher et al. (2013) |
| Tumpangpitu porphyry-high sulphidation epithermal deposit et al. (Trans. Inst. Min. Metall. B) +1 other reference | |
| Davies (2008) |
| Singer et al. (2008) |
| www.newcrest.com.au (2017) |
| Bambang Nugroho et al. (2024) |
| King et al. (2014) |
| King et al. (2014) | |
| Turner et al. (1994) |
| Sweetapple et al. (2014) |
| Bensaman et al. (2015) |
| Al Hakim et al. (2017) |
| Tun et al. (2015) |
| Imawan et al. (2024) | |
| Verdiansyah et al. (2022) |
| Burrows et al. (2020) +2 other references |
| Singer et al. (2008) |
| Abidin et al. (2014) |
Iran | |
| Fazli et al. (2022) |
| Fazli et al. (2024) |
| Abedini et al. (2025) |
| BAZARGANI-GUILANI et al. (2008) |
Italy | |
| Balenzano F. (1981) | |
| Balenzano F. (1981) |
| Balenzano F. (1981) | |
| Balenzano F. (1981) | |
| Balenzano F. (1981) |
| Balenzano F. (1981) | |
| Balenzano F. (1981) | |
| Balenzano F. (1981) | |
| Collezione Adorni Fabrizio |
| Adorni et al. (2010) |
| Bortolozzi et al. (2015) |
| Mattias et al. (1979) +2 other references |
| Lombardi et al. (1979) +1 other reference | |
| Analysed by Dr Giuseppetti (comm. Enrico Bonacina) |
| Bortolozzi (n.d.) |
| Parola et al. (2023) +1 other reference |
| Ambrino et al. (2008) |
| Campostrini (2001) |
| Preite et al. (1995) |
| Mattioli (1979) +1 other reference |
| Mattioli (1979) +1 other reference | |
| Mattioli (1979) +1 other reference | |
| Fernando Caboni et al. (2023) |
| Fernando Caboni et al. (2024) |
| Fernando Caboni et al. (2024) +1 other reference | |
| Lecca et al. (2024) |
| //doi.org/10.57635/MICRO.2025.23.16 |
| collect from authors +1 other reference |
| Daniel Lorenz |
| Bortolozzi (n.d.) |
| Bortolozzi (n.d.) |
| Ferretti P. et al. (Lavis, Trentino-Alto Adige) |
| Canal et al. (2012) |
| Raman Spectroscopy by Ivano Rocchetti |
| Bortolozzi et al. (2013) |
| Bortolozzi (n.d.) |
| October 2021 Micro 19 (3-2021) +2 other references | |
| SEM/EDS analysis by AMI SIUK | |
| Erica Bittarello +3 other references | |
| Dill (1979) |
| Boscardin et al. (2011) |
| Pegoraro et al. (1997) +2 other references |
| Lapis (2) +1 other reference |
| Pegoraro S. (2014) | |
| Boscardin et al. (2011) |
Japan | |
| INOUE et al. (1991) |
| - (n.d.) |
| 米田哲朗. (1989) |
| Shimizu +1 other reference |
| Watanabe et al. (1996) |
| Myint (1996) |
| Morishita et al. (2019) |
| Econ Geol (1989) | |
| Kawano et al. (1991) | |
| ... +1 other reference |
| ... +1 other reference |
| Fujii et al. (1971) |
| Fujii et al. (1971) |
| - (n.d.) |
| Yamada (2004) |
Kazakhstan | |
| Jermolenko (2002) |
| Singer et al. (2008) |
| Dill (1999) |
| Singer et al. (2008) |
| Tokpayev et al. (2025) |
Kosovo | |
| Palinkaš +6 other references |
Kyrgyzstan | |
| Kolesar et al. (1993) |
| Kolesar et al. (1993) | |
| |
| Djenchuraeva et al. (2008) |
Laos | |
Luxembourg | |
| Philippo et al. (2007) |
Malaysia | |
| Percival et al. (1990) |
| Yajima (1960) | |
| Wolfram Dieter Schuh (1993) | |
| Caisheng Zhao et al. (2004) +1 other reference |
Mexico | |
| Wilson W.E. (2024) |
| Marcus Origileri |
| Sotelo (2016) |
| Sotelo (2016) | |
| Anisimov et al. (2001) |
| Camprubí et al. (1) |
| Clay Miner. 29:452-453 (1981) | |
| Braith et al. (2001) +2 other references |
| Alamos Gold Inc |
| Berrocal-Lopez +1 other reference |
Mongolia | |
| Erdene Resource Development Corp. |
| MacDonald et al. (2024) | |
| Fengjun Nie et al. (2004) +1 other reference |
| Economic Geology September 2001 v. 96 ... +1 other reference |
| December 2009 +3 other references | |
| Porter (Mike) | |
| Porter (Mike) | |
| Kim et al. (2017) | |
| Singer et al. (2008) |
Morocco | |
| Barral et al. (2008) |
Myanmar | |
| Soonthorntantikul et al. (2017) |
| Kirwin et al. (2019) |
| Mitchell et al. (2008) +1 other reference |
Netherlands | |
| T.G. Nijland |
| T.G. Nijland | |
| T.G. Nijland | |
| |
New Zealand | |
| Burgess (1978) |
| Singh (2015) |
| Chambefort et al. (2017) |
| Railton et al. (1990) |
| Railton et al. (1990) |
| Christie et al. (2007) |
Nicaragua | |
| Hynek et al. (2013) |
North Sea | |
Norway | |
| Harald Folvik XRD NMH |
| Berg et al. (2003) |
| Raade (1969) +1 other reference |
| Nordli et al. (1997) | |
| Husdal (2023) |
| Raade (1972) | |
Palau | |
| Miller et al. (1987) |
Panama | |
| Redwood (2020) |
| Redwood (2020) |
| Redwood (2020) |
| Redwood (2020) | |
| Yang et al. (1997) | |
| I. Corral et al. (2010) +3 other references | |
| Redwood (2020) |
Papua New Guinea | |
| K92 Mining |
| Rinne et al. (2018) |
| Rinne et al. (2018) | |
| Rinne et al. (2018) | |
| Singer et al. (2008) | |
| Singer et al. (2005) |
| Bainbridge et al. (1998) +1 other reference | |
| BHP |
Peru | |
| Rainbow et al. (2005) |
| Longo et al. (2005) |
| Lewis (1964) |
| Dill et al. (1997) |
| Singer et al. (2008) |
| Barrick Gold Corporation |
| Benites et al. (2022) +1 other reference |
| Graton +1 other reference |
| Regina Baumgartner et al. (2003) +1 other reference |
| Bendezu et al. (2009) |
| Bendezú et al. (2003) +2 other references | |
| Dube et al. (2014) | |
Philippines | |
| Singer et al. (2008) |
| Singer et al. (2008) |
| Villaplaza et al. (2017) |
| Singer et al. (2008) |
| Singer et al. (2008) |
| Singer et al. (2008) |
| Singer et al. (2008) |
| Angcoy (2010) |
Poland | |
| Dan Costian collection & photo-780123 |
| Janeczek et al. (1991) |
| Mineralogisches Museum Bonn specimen. |
| Eligiusz Szełęg private collection |
| Lis et al. (1986) | |
| Wojciech Czapliński | |
| Lis et al. (1986) |
| Lis et al. (1986) | |
| Lis et al. (1986) |
| Lis et al. (1986) |
| Salwa (2019) |
Portugal | |
| Alves (n.d.) |
| Alves (n.d.) |
| Alves (n.d.) |
| Pedro Alves analytical data |
Romania | |
| Milu et al. (2004) +1 other reference |
| Marincea +4 other references |
| Onac et al. (1995) |
| Tamas et al. (2003) +1 other reference |
| www.minerals-of-the-carpathians |
Russia | |
| Pekov I.V. et al. (2010) +1 other reference |
| Pekov et al. (2010) |
| Pavlova et al. (2009) |
| Pavlova et al. (2009) |
| Pavlova et al. (2009) |
| Pavlova et al. (2009) | |
| Luzgin et al. (1977) | |
| Pavlova et al. (2009) |
| Ripp et al. (1996) +1 other reference |
| Chitalin et al. (2023) |
| Kalko et al. (2014) |
| Bortnikov et al. (2004) | |
| Volkov et al. (2011) | |
| Yakich et al. (2021) |
| Стрельников; МВ; Ханин; ДА; Япаскурт; ВО; Бритвин; СН; Плетнёв; ПА; et al. (n.d.) +3 other references |
| Strelnikov M. V. et al. (2025) | |
| Pekov et al. (2026) | |
| Sergeeva et al. (2019) |
| Yakich et al. (2021) |
| Левочская et al. (2021) | |
| Tamara Yu. Yakich * et al. (2024) +2 other references | |
| Bukanov et al. (2012) |
| Volkov et al. (2015) |
| Volkov et al. (2023) |
| ... |
| Grant et al. (2001) |
| Goryachev et al. (2011) |
| Goryachev et al. (2011) | |
| Fridovsky et al. (2014) |
| Bortnikov et al. (2010) | |
| Goryachev et al. (2011) | |
| Bortnikov et al. (2007) +1 other reference |
| Nokleberg (2005) |
| Pal’yanova et al. (2016) |
| Kasatkin et al. (2021) |
| USGS Open File Report 2005-1252 p215ff |
| Hyršl (1992) |
| Laverov et al. (2008) |
| Kasatkin et al. (2014) |
Serbia | |
| RTB Bor |
| Bosić et al. (2025) | |
| Zivanovic (2019) |
Slovakia | |
| Kozák J. et al. (2017) |
| Koděra P. et al. (2008) +1 other reference |
| Koděra et al. (1986) | |
| Miškovic J. (1990) |
| Koděra et al. (1986) |
| Ďuďa (1993) |
| Bacsó |
| Bacsó |
| Koděra et al. (1986) |
| Ďuda et al. (1996) | |
| Koděra et al. (1986) | |
| Hurný J. (1974) | |
| Grecula (1995) | |
| Koděra et al. (1986) |
| Ďuďa R. |
| Bačo |
| Koděra et al. (1986) |
| Pauliš |
| Koděra et al. (1986) |
| Ďuďa |
| Koděra et al. (1986) |
Slovenia | |
| Albrecht von Quadt et al. (2007) |
South Africa | |
| Cairncross et al. (1995) |
| Cairncross et al. (1995) +1 other reference |
South Korea | |
| Cho et al. (1994) | |
| Econ Geol (1984) |
| Chi et al. (1989) |
| Chi et al. (1989) | |
| "Exploration and utilization of the ... +1 other reference |
| Kim et al. (1991) |
Spain | |
| P. Sanger-von Oepen (1990) |
| Calvo Rebollar (2014) | |
| Rewitzer et al. (2018) |
| Cruz et al. (1997) |
| Perona et al. (2018) |
| Saupe (1990) |
| Fabre (n.d.) | |
| Alfredo Petrov |
| Joan Rosell |
Sweden | |
| Pieslinger (2023) |
| Norin (1949) |
| Sandström (2008) |
Switzerland | |
| Hofmann et al. (2014) +1 other reference |
| Hofmann et al. (2014) |
| Peters (1968) +2 other references |
| Soom et al. (1988) +1 other reference |
| Deicha et al. (1960) +2 other references |
| Hofmann et al. (2014) |
| Graeser et al. (1974) +2 other references |
| Chukanov et al. (2018) |
| Cuchet et al. (2012) |
| Stalder et al. (1998) |
| |
Taiwan | |
| L. P. Tan (1993) +1 other reference |
| Lin Szu Bin +2 other references |
| Li et al. (2000) |
Tajikistan | |
| Pavlova et al. (2009) |
| Pavlova et al. (2009) | |
Turkey | |
| Rabayrol et al. (2023) |
| Rabayrol et al. (2023) |
| Rabayrol et al. (2023) |
| Rabayrol et al. (2023) |
| |
| Oygür (1997) |
| Yigit (2012) |
| Yigit (2012) |
| Yigit (2012) |
| Aluç et al. (2025) | |
| Yigit (2012) |
| Smith et al. (2014) | |
| Yigit (2012) |
| Yilmaz et al. (2010) +1 other reference | |
| Yigit (2012) | |
| Yigit et al. (2000) |
| Singer et al. (2008) |
| Hanilçi +6 other references |
UK | |
| Fitch et al. (2022) |
| Golley et al. (1995) |
| Golley et al. (1995) |
| Golley et al. (1995) |
| Golley et al. (1995) | |
| Golley et al. (1995) |
| Day (1999) |
| [Specimen in the Natural History Museum | |
| Day (1999) |
| |
| John Sobolewski collection |
| Hubbard et al. (2001) |
| |
| Ian Jones collection |
| Day (1999) |
| Ian Jones collection |
| Sorrell (n.d.) |
| |
| Day (1999) |
| |
| Chamosite confirmed by XRD at the ... |
| |
| Ian Jones collection |
Ukraine | |
| Alexander I. Tischenko (1996) |
| Alexander I. Tischenko (1996) | |
| Popov S.P. Mineralogy of the Crimea (1938) | |
| Tischenko Alexander |
| Geologiya rtutnyhmestorogdeniy i proyavleniy Ukrainy (Geology of mercurial deposits and ore occurences in Ukraine) |
| A. Tischenko. Minerals of the Crimea - ... |
| Geologiya SSSR (The geology of USSR) |
| Popov S.P. Mineralogy of the Crimea (1938) | |
| Möckel et al. (1992) |
| Dmitry Tonkacheev | |
| Dobrovolskaya T.I. (2004) |
| Econ Geol (1994) +1 other reference |
| O.K.Babynin et al. (2006) | |
| Lyckberg et al. (2009) |
USA | |
| Cook et al. (1982) |
| - (2008) |
| - (2008) | |
| - (2008) |
| Runnells (1964) |
| Kelley et al. (2022) |
| Am Min 49:158-165 |
| - (2008) |
| - (2005) | |
| Nye (1968) +1 other reference |
| Anthony et al. (1995) | |
| Michael Cline Collection |
| Singer et al. (2005) |
| Anthony et al. (1995) | |
| Winant (2010) +2 other references |
| MRDS database Dep ID #10026734 +1 other reference |
| Rocks & Min.:63:107 +1 other reference |
| Rocks & Min.:63:107 +1 other reference | |
| Rocks & Min.:63:107 +2 other references | |
| Rocks & Min.:63:108. |
| Rocks & Min.:63:107 +1 other reference |
| Shockley (1976) |
| Rocks & Min.: 63: 109. | |
| - (2005) |
| Rocks & Min.: 63:110. | |
| - (2005) | |
| Rocks & Min.: 63: 113. +1 other reference |
| Rocks & Min.: 63: 113. +1 other reference | |
| Rocks & Min.: 63: 113. | |
| Rocks & Min.:63:112 +1 other reference |
| Rocks & Minerals (1988) +1 other reference |
| Rocks & Minerals (1988) +1 other reference |
| Rocks & Minerals (1988) +1 other reference | |
| - (2005) | |
| Clardy et al. (1976) +1 other reference | |
| Rocks & Minerals (1988) +1 other reference | |
| Rocks & Minerals (1988) +1 other reference | |
| - (2005) | |
| Rocks & Minerals (1988) +1 other reference |
| Rocks & Minerals (1988) +1 other reference | |
| Rocks & Minerals (1988) +1 other reference | |
| Rocks & Minerals (1988) | |
| Rocks & Min.: 63:118. |
| Rocks & Min.: 63:118. | |
| Rocks & Min.: 63:118. | |
| Rocks & Min.: 63:118. |
| Rocks & Min.: 63:118. |
| Rocks & Minerals (1988) | |
| Rocks & Minerals (1988) | |
| Rocks & Min.: 63:118. | |
| - (2005) | |
| Rocks & Min.: 63:118. | |
| Rocks & Minerals (1988) |
| Rocks & Min.: 63:118. | |
| Rocks & Min.: 63:118. |
| Rocks & Min.: 63:118. | |
| Howard (2007) | |
| Rocks & Minerals (1988) |
| Dana 6: 140 & 692. +1 other reference |
| McNeil et al. (1991) |
| Rocks & Minerals (1988) | |
| Howard (1987) +1 other reference | |
| Rocks & Min.:63:124 +1 other reference |
| - (2005) |
| Robert G. Lee et al. (2005) |
| Lovering et al. (1950) |
| Eckel et al. (1997) | |
| Eckel et al. (1997) |
| Eckel et al. (1997) | |
| Eckel et al. (1997) |
| Eckel et al. (1997) | |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) | |
| Eckel et al. (1997) |
| - (2005) |
| - (2005) | |
| - (2005) |
| - (2005) | |
| - (2005) | |
| - (2005) | |
| USGS Bull 1434 |
| - (2005) | |
| Eckel et al. (1997) |
| Eckel et al. (1997) | |
| Rosemeyer et al. (1986) |
| Rocks & Min.:62:9 +3 other references |
| Collector's Edge Minerals Inc |
| Min News 20:9 pp1 | |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Zheng (1994) |
| Rocks & Minerals 71:2 pp94-101 |
| USGS Prof. Paper 750C +1 other reference | |
| Eckel et al. (1997) |
| Rocks & Min.: 70:398 |
| Schooner (circa 1980s) |
| Barwood (1999) +1 other reference |
| - (2005) |
| Econ Geol (1994) |
| Econ Geol (1994) |
| Lininger (1994) |
| Gleba (2008) |
| Carlson et al. (2007) |
| Heinrich et al. (2004) | |
| Heinrich et al. (2004) | |
| Heinrich et al. (2004) |
| Heinrich et al. (2004) | |
| Heinrich et al. (2004) |
| Morris (1983) |
| Heinrich et al. (2004) | |
| Heinrich et al. (2004) |
| Heinrich et al. (2004) | |
| Sherwood et al. (1998) |
| - (2005) |
| - (2005) |
| Sherwood et al. (1998) +1 other reference |
| - (2005) | |
| Rocks & Min. Mar. 1998 +2 other references | |
| Econ Geol (1986) | |
| Afifi et al. (1988) +1 other reference |
| Sherwood et al. (1998) |
| Chris DeGrave Collection |
| Sherwood et al. (1998) +1 other reference |
| Afifi et al. (1988) +3 other references |
| Afifi et al. (1988) +2 other references |
| - (2005) | |
| - (2005) |
| - (2005) |
| - (2005) |
| AmMin 21:457 | |
| - (2005) |
| Sherwood et al. (1998) | |
| - (2005) | |
| Barrick Gold Corporation |
| Anaconda Mining Company Collection |
| Guilbert and Zeihen +1 other reference | |
| Castor et al. (2004) |
| Nickel Deposits in Cottonwood Canyon et al. (1939) | |
| Smith et al. (2013) |
| Castor et al. (2004) | |
| - (2005) | |
| Castor et al. (2004) |
| King (n.d.) |
| Abdolmaleki et al. (2026) |
| Newmont Mining Corporation |
| Barrick Gold Corporation |
| - (2005) | |
| Kuehn et al. (1992) | |
| - (2005) | |
| - (2005) | |
| Barrick Gold Corporation | |
| - (2005) |
| Osterberg (1990) |
| Clark (2012) |
| Riedell et al. (2020) |
| Vikre et al. (1994) | |
| Portela et al. (2026) |
| Castor et al. (2004) |
| Castor et al. (2004) |
| Castor et al. (2004) |
| - (2005) | |
| Castor et al. (2004) |
| Castor et al. (2004) | |
| Castor et al. (2004) | |
| Tom Mortimer collection no. 1886 (reference added by Peter Cristofono) |
| USGS Bull 1451 |
| Northrop et al. (1996) |
| Polyak +1 other reference |
| - (2005) |
| Elston (1968) |
| - (2005) |
| Northrop et al. (1996) | |
| Northrop et al. (1996) |
| DeMark et al. (1999) |
| Walter et al. (2013) |
| Espenshade et al. (1960) |
| Am Min (1948) |
| Tom Loomis specimen +2 other references |
| Collected by James J. "Skip" Colflesh | |
| Petersen et al. (2001) |
| American Mineralogist |
| Bullock (1981) |
| - (2005) | |
| - (2005) +1 other reference | |
| Alunite Ridge |
| - (2005) +1 other reference | |
| Bos Orent (2021) |
| Journal of Geosciences (2015) +1 other reference |
| Kampf et al. (2022) | |
| Bullock (1981) |
| Bullock (1981) | |
| Singer et al. (2008) |
| Bullock (1981) | |
| Dietrich (1990) |
| Dietrich (1990) |
| Dietrich (1990) |
| Dietrich (1990) |
| - (2005) |
| Rye et al. (2003) | |
| Cannon (1975) |
| Cordua (1998) |
| Cordua (1998) |
| 2009 Portland GSA Annual Meeting (18-21 October 2009) +1 other reference |
Uzbekistan | |
| Rustam Koneev et al. (2005) +1 other reference |
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Mas d'Alary opencast mine, Lodève, Lodève, Hérault, Occitanie, France