Hematite
This page kindly sponsored by Norman King
About Hematite
Formula:
Fe2O3
Colour:
Steel-grey to black in crystals and massively crystalline ores, dull to bright "rust-red" in earthy, compact, fine-grained material.
Lustre:
Metallic, Sub-Metallic, Dull, Earthy
Hardness:
5 - 6
Specific Gravity:
5.26
Crystal System:
Trigonal
Member of:
Name:
Originally named about 300-325 BCE by Theophrastus from the Greek, "αιματίτις λίθος" ("aematitis lithos") for "blood stone". It is possibly the first mineral ever named ending with a "-ite" suffix. Translated in 79 by Pliny the Elder to haematites, "bloodlike", in allusion to the vivid red colour of the powder. The modern form evolved by authors frequently simplifying the spelling by excluding the "a", somewhat in parallel with other words originally utilising the root "haeme".
Polymorph of:
Hematite Group. The iron analogue of Corundum, Eskolaite, and Karelianite.
Hematite is rather variable in its appearance - it can be in reddish brown, ocherous masses, dark silvery-grey scaled masses, silvery-grey to black crystals, and dark-grey masses, to name a few. What they all have in common is a rust-red streak.
Black crystals may be confused with ilmenite.
NOTE: The 'hematite' used in jewelry, and often sold as magnetized items, is nothing of the sort and is an artificially created material, see Magnetic Hematite.
In an experimental volcanic gas condensation by Africano et al. (2002) it deposited in high fO2 conditions during cooling from ca. 800°C down to ca. 650°C.
Visit gemdat.org for gemological information about Hematite.
Hematite is rather variable in its appearance - it can be in reddish brown, ocherous masses, dark silvery-grey scaled masses, silvery-grey to black crystals, and dark-grey masses, to name a few. What they all have in common is a rust-red streak.
Black crystals may be confused with ilmenite.
NOTE: The 'hematite' used in jewelry, and often sold as magnetized items, is nothing of the sort and is an artificially created material, see Magnetic Hematite.
In an experimental volcanic gas condensation by Africano et al. (2002) it deposited in high fO2 conditions during cooling from ca. 800°C down to ca. 650°C.
Visit gemdat.org for gemological information about Hematite.
Classification of Hematite
Approved, 'Grandfathered' (first described prior to 1959)
4/C.04-20
4.CB.05
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations
Dana 7th ed.:
4.3.1.2
4.3.1.2
4 : SIMPLE OXIDES
3 : A2X3
4 : SIMPLE OXIDES
3 : A2X3
7.20.4
7 : Oxides and Hydroxides
20 : Oxides of Fe
7 : Oxides and Hydroxides
20 : Oxides of Fe
Pronounciation of Hematite
Pronounciation:
Play | Recorded by | Country |
---|---|---|
Jolyon & Katya Ralph | United Kingdom |
Physical Properties of Hematite
Metallic, Sub-Metallic, Dull, Earthy
Transparency:
Opaque
Colour:
Steel-grey to black in crystals and massively crystalline ores, dull to bright "rust-red" in earthy, compact, fine-grained material.
Comment:
See Rossman, G. R. (1996) for cause of red colour.
Streak:
Reddish brown ("rust-red")
Hardness:
5 - 6 on Mohs scale
Hardness:
VHN100=1000 - 1100 kg/mm2 - Vickers
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
Partings on {0001} and {1011} due to twinning. Unique cubic parting in masses and grains at Franklin Mine, Franklin, NJ.
Fracture:
Irregular/Uneven, Sub-Conchoidal
Comment:
Elastic in thin lamellae
Density:
5.26 g/cm3 (Measured) 5.255 g/cm3 (Calculated)
Optical Data of Hematite
Type:
Uniaxial (-)
RI values:
nω = 3.150 - 3.220 nε = 2.870 - 2.940
Max Birefringence:
δ = 0.280

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Type:
Anisotropic
Anisotropism:
Distinct
Colour in reflected light:
White to greyish white with bluish tint
Internal Reflections:
Red
Pleochroism:
Weak
Comments:
O = brownish red
E = yellowish red
E = yellowish red
Chemical Properties of Hematite
Formula:
Fe2O3
Elements listed:
Common Impurities:
Ti,Al,Mn,H2O
Crystallography of Hematite
Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
R3c
Cell Parameters:
a = 5.038(2) Å, c = 13.772(12) Å
Ratio:
a:c = 1 : 2.734
Unit Cell V:
302.72 ų (Calculated from Unit Cell)
Z:
6
Morphology:
Crystals generally thick to thin tabular {0001}, rarely prismatic [0001] or scalenohedral; also rarely rhombohedral {1011}, producing pseudo-cubic crystals. Often found in sub-parallel growths on {0001} or as rosettes ("iron roses.") Sometimes in micaceous to platy masses. May be compact columnar or fibrous masses, sometimes radiating, or in reniform masses with a smooth fracture ("kidney ore"), and botryoidal and stalactic. Frequently in earthy masses, also granular, friable to compact, concretionary and oolitic.
Twinning:
Penetration twins on {0001}, or with {1010} as a composition plane. Frequently exhibits a lamellar twinning on {1011} in polished section.
Crystallographic forms of Hematite
Crystal Atlas:
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X-Ray Powder Diffraction
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Radiation - Copper Kα
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.68 | (30) |
2.70 | (100) |
2.52 | (70) |
2.21 | (20) |
1.84 | (40) |
1.69 | (50) |
1.49 | (30) |
1.45 | (30) |
Synonyms of Hematite
Other Language Names for Hematite
Basque:Hematite
Catalan:Hematites
Croatian:Hematit
Czech:Hematit
Esperanto:Hematito
Estonian:Hematiit
Finnish:Hematiitti
Galician:Hematita
German:Hämatit
Anhydroferrit
Eisenglanz
Haematit
Haematites
Hematit
Jernglanz
Roteisenerz
Roteisenstein
Rotheisenstein
Rother Eisenrahm
Anhydroferrit
Eisenglanz
Haematit
Haematites
Hematit
Jernglanz
Roteisenerz
Roteisenstein
Rotheisenstein
Rother Eisenrahm
Greek:Αιματίτης
Hebrew:המטיט
Hungarian:Hematit
Italian:Ematite
Ematite rossa
Oligisto
Ematite rossa
Oligisto
Japanese:赤鉄鉱
Latin:Ochra rubra
Lithuanian:Hematitas
Norwegian (Bokmål):Hematitt
Polish:Hematyt
Portuguese:Hematita
Romanian:Hematit
Russian:Гематит
Simplified Chinese:赤铁矿
Slovak:Hematit
Swedish:Hematit
Blodsten
Haematites ruber
Järnmalm tritura rubra
Jernglans
Röd Jernmalm
Rödmalm
Speglande Jernmalm
Blodsten
Haematites ruber
Järnmalm tritura rubra
Jernglans
Röd Jernmalm
Rödmalm
Speglande Jernmalm
Traditional Chinese:赤鐵礦
Turkish:Hematit
Ukrainian:Гематит
Varieties of Hematite
Alumohematite | Aluminian Hematite |
Crucilite | Pseudomorphs of Hematite and/or Goethite after Arsenopyrite, named for cruciform shape of crystals. Originally described from Clonmel, Co. Waterford, Ireland. |
Iron Rose | A term used to describe rounded aggregates of tabular crystals. In these formations, the arrangement of the crystals somewhat reminds of the leaves in a rose blossom, hence the name. |
Kidney Ore | A reniform (kidney-shaped) or botryoidal variety of hematite. The internal structure of the kidney-shaped nodules is usually concentric and radiating. |
Martite | The name given for hematite pseudomorphs after magnetite, formed under conditions of increasing oxygen fugacity. Originally described from Itabira, Minas Gerais, Southeast Region, Brazil. |
Rainbow Hematite | An iridescent variety of specularite (hematite), its colour play caused by a very thin coating of nanoparticles of an unidentified aluminium phosphate (Nadin, 2007). |
Red Ochre | Earthy, reddish variety of hematite. Used as a natural red pigment. |
Specularite | A variety of hematite characterized by aggregates of silvery, metallic, specular ("mirror-like") hematite flakes or tabular, anhedral crystals. |
Relationship of Hematite to other Species
Member of:
Other Members of this group:
Corundum | Al2O3 | Trig. 3m (3 2/m) : R3c |
Eskolaite | Cr2O3 | Trig. |
Karelianite | V3+2O3 | Trig. |
Tistarite | Ti3+2O3 | Trig. 3m (3 2/m) : R3c |
Common Associates
Associated Minerals Based on Photo Data:
Quartz | 2,051 photos of Hematite associated with Quartz on mindat.org. |
Calcite | 1,213 photos of Hematite associated with Calcite on mindat.org. |
Rutile | 843 photos of Hematite associated with Rutile on mindat.org. |
Amethyst | 405 photos of Hematite associated with Amethyst on mindat.org. |
Pyrite | 276 photos of Hematite associated with Pyrite on mindat.org. |
Smoky Quartz | 250 photos of Hematite associated with Smoky Quartz on mindat.org. |
Goethite | 245 photos of Hematite associated with Goethite on mindat.org. |
Fluorite | 202 photos of Hematite associated with Fluorite on mindat.org. |
Magnetite | 196 photos of Hematite associated with Magnetite on mindat.org. |
Dolomite | 173 photos of Hematite associated with Dolomite on mindat.org. |
Related Minerals - Nickel-Strunz Grouping
4.CB.05 | Brizziite | NaSb5+O3 | Trig. 3 : R3 |
4.CB.05 | Corundum | Al2O3 | Trig. 3m (3 2/m) : R3c |
4.CB.05 | Ecandrewsite | (Zn,Fe2+,Mn2+)TiO3 | Trig. 3 : R3 |
4.CB.05 | Eskolaite | Cr2O3 | Trig. |
4.CB.05 | Geikielite | MgTiO3 | Trig. 3 : R3 |
4.CB.05 | Ilmenite | Fe2+TiO3 | Trig. 3 : R3 |
4.CB.05 | Karelianite | V3+2O3 | Trig. |
4.CB.05 | Melanostibite | Mn2+(Sb5+,Fe3+)O3 | Trig. |
4.CB.05 | Pyrophanite | Mn2+TiO3 | Trig. 3 : R3 |
4.CB.05 | Akimotoite | (Mg,Fe2+)SiO3 | Trig. |
4.CB.05 | Unnamed (Auroantimonate) | AuSbO3 | |
4.CB.05 | UM1998-11-O-AuHSb | Au+2Sb3+O2(OH) | |
4.CB.05 | Tistarite | Ti3+2O3 | Trig. 3m (3 2/m) : R3c |
4.CB.10 | Avicennite | Tl2O3 | Iso. m3 (2/m 3) : Ia3 |
4.CB.10 | Bixbyite | Mn3+2O3 | Iso. m3 (2/m 3) : Ia3 |
4.CB.15 | Armalcolite | (Mg,Fe2+)Ti2O5 | Orth. mmm (2/m 2/m 2/m) |
4.CB.15 | Pseudobrookite | Fe2TiO5 | Orth. mmm (2/m 2/m 2/m) |
4.CB.20 | Zincohögbomite-2N2S | [(Zn,Al,Fe2+)3(Al,Fe3+,Ti)8O15(OH)]2 | Hex. 6mm : P63mc |
4.CB.20 | Zincohögbomite-2N6S | [(Zn,Mg)7(Al,Fe3+,Ti)16O31(OH)]2 | Hex. 6mm : P63mc |
4.CB.20 | Magnesiohögbomite-6N6S | [(Mg,Fe2+)3(Al,Ti,Fe3+)8O15(OH)]6 | Trig. 3m (3 2/m) : R3m |
4.CB.20 | Magnesiohögbomite-2N3S | [(Mg,Fe2+,Zn)4(Al,Ti,Fe3+)10O19(OH)]2 | Trig. 3m (3 2/m) : P3 1m |
4.CB.20 | Magnesiohögbomite-2N2S | [(Mg,Fe2+)3[Al7(Ti,Fe3+)]O15(OH)]2 | Hex. 6mm : P63mc |
4.CB.20 | Ferrohögbomite-6N12S | [(Fe2+,Mg,Zn)5(Al,Ti,Fe3+)12O23(OH)]6 | Trig. 3m (3 2/m) : R3m |
4.CB.25 | Pseudorutile | Fe2Ti3O9 | Hex. |
4.CB.25 | Kleberite | FeTi6O11(OH)5 | Mon. 2/m : P21/b |
4.CB.30 | Berdesinskiite | V3+2TiO5 | Mon. |
4.CB.30 | Oxyvanite | V3+2V4+O5 | Mon. 2/m : B2/b |
4.CB.35 | Olkhonskite | (Cr,V)2Ti3O9 | Mon. |
4.CB.35 | Schreyerite | V3+2Ti3O9 | Mon. |
4.CB.40 | Kamiokite | Fe2Mo3O8 | Hex. |
4.CB.40 | Nolanite | (V3+,Fe3+,Fe2+,Ti)10O14(OH)2 | Hex. |
4.CB.40 | Rinmanite | Zn2Sb2Mg2Fe4O14(OH)2 | Hex. 6 : P63 |
4.CB.40 | Iseite | Mn2Mo3O8 | Hex. 6mm : P63mc |
4.CB.40 | Majindeite | Mg2Mo3O8 | Hex. 6mm : P63mc |
4.CB.45 | Claudetite | As2O3 | Mon. 2/m |
4.CB.45 | Stibioclaudetite | AsSbO3 | Mon. 2/m : P21/m |
4.CB.50 | Arsenolite | As2O3 | Iso. m3m (4/m 3 2/m) : Fd3m |
4.CB.50 | Senarmontite | Sb2O3 | Iso. m3m (4/m 3 2/m) : Fd3m |
4.CB.55 | Valentinite | Sb2O3 | Orth. mmm (2/m 2/m 2/m) : Pccn |
4.CB.60 | Bismite | Bi2O3 | Mon. 2/m : P21/b |
4.CB.65 | Sphaerobismoite | Bi2O3 | Tet. |
4.CB.70 | Sillénite | Bi12SiO20 | Iso. 2 3 : I2 3 |
4.CB.75 | Kyzylkumite | V3+Ti2O5(OH) | Mon. 2/m : P21/b |
4.CB.80 | Tietaiyangite | Fe3+4Fe2+TiO9 | Hex. |
Related Minerals - Dana Grouping (8th Ed.)
4.3.1.1 | Corundum | Al2O3 | Trig. 3m (3 2/m) : R3c |
4.3.1.3 | Eskolaite | Cr2O3 | Trig. |
4.3.1.4 | Karelianite | V3+2O3 | Trig. |
Related Minerals - Hey's Chemical Index of Minerals Grouping
7.20.1 | Wüstite | FeO | Iso. m3m (4/m 3 2/m) : Fm3m |
7.20.2 | Magnetite | Fe2+Fe3+2O4 | Iso. m3m (4/m 3 2/m) : Fd3m |
7.20.3 | Maghemite | Fe3+2O3 | Iso. 4 3 2 : P41 3 2 |
7.20.5 | Goethite | α-Fe3+O(OH) | Orth. mmm (2/m 2/m 2/m) |
7.20.6 | Akaganeite | (Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O | Mon. 2/m |
7.20.7 | Feroxyhyte | Fe3+O(OH) | Hex. |
7.20.8 | Lepidocrocite | γ-Fe3+O(OH) | Orth. mm2 : Cmc21 |
7.20.9 | Ferrihydrite | Fe3+10O14(OH)2 | Trig. |
7.20.10 | Amakinite | (Fe2+,Mg)(OH)2 | Trig. |
7.20.11 | Magnesioferrite | MgFe3+2O4 | Iso. m3m (4/m 3 2/m) : Fd3m |
7.20.12 | Muskoxite | Mg7Fe4O13 · 10H2O | Trig. 3m (3 2/m) |
7.20.13 | Srebrodolskite | Ca2Fe3+2O5 | Orth. mmm (2/m 2/m 2/m) : Pnma |
7.20.14 | Hercynite | Fe2+Al2O4 | Iso. m3m (4/m 3 2/m) : Fd3m |
7.20.15 | Brownmillerite | Ca2(Al,Fe3+)2O5 | Orth. mm2 |
Fluorescence of Hematite
None.
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.
Industrial Uses:
A major ore of iron.
Hematite in petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
- Ore
- Igneous rock
- Sedimentary rock and sediment
- Sediment
- Sedimentary rock
- Biochemical and chemical sedimentary rock
- ⓘ Ironstone
- ⓘ Mud-grade ironstone
- ⓘ Sand-grade ironstone
- ⓘ Gravel-grade ironstone
- ⓘ Hematite-stone
- ⓘ Calciclastic ironstone
- ⓘ Iron-mudstone
- ⓘ Iron-wackestone
- ⓘ Iron-packstone
- ⓘ Iron-grainstone
- ⓘ Iron-boundstone
- ⓘ Ooid-ironstone
- ⓘ Pisoid-ironstone
- ⓘ Oncoid-ironstone
- ⓘ Microoncoid-ironstone
- ⓘ Peloid-ironstone
- Banded iron formation
- Siliceous-rock
- ⓘ Ironstone
- Biochemical and chemical sedimentary rock
- Metamorphic rock
- Superficial deposit
References for Hematite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Agricola (1546) 565, 468.
Biäsch (1929) Zs. Kr.: 70: 1.
Palache, C., Berman, H., and Frondel, C. (1944) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 527-534.
Blake, R.L., Hessevick, R.E., Zoltai, T., and Finger, L.W. (1966) Refinement of the hematite structure. American Mineralogist: 51: 123-129.
Mao, H.K., Virgo, D., and Bell, P.M. (1977) High-pressure 57Fe Mössbauer data on the phase and magnetic transitions of magnesioferrite (MgFe2O4), magnetite (Fe3O4), and hematite (Fe2O3). Carnegie Institution of Washington Year Book: 76: 522-525.
Fleet, M.E. and Arima, M. (1985) Oriented hematite inclusions in sillimanite. American Mineralogist: 70: 1232-1237.
Rossman, G. R. (1996) Why hematite is red: Correlation of optical absorption intensities and magnetic moments of Fe3+ minerals. Mineral Spectroscopy: A tribute to Roger G. Burns, Special Publication, (5) pp 23-27.
Gaines, R.V., Skinner, C.W.H., Foord, E.E., Mason, B., and Rosenzweig, A. (1997) Dana's New Mineralogy: The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana: 217.
Andrault, D. and Bolfan-Casanova, N. (2001) High-pressure phase transformation in the MgFe2O4 and Fe2O3-MgSiO3 systems. Physics and Chemistry of Minerals: 28: 211-217.
Rozenberg, G.K., Dubrovinsky, L.S., Pasternak, M.P., Naaman, O., LeBihan, T., and Ahuja, R. (2002) High-pressure structural studies of hematite (Fe2O3). Physical Review B: 65: 064112.
Shim, S-H. and Duffy, T.S. (2002) Raman spectroscopy of Fe2O3 to 62GPa. American Mineralogist: 87: 318-326.
Cornell, R.M. and Schwertmann, U. (2003) The iron oxides. Structure, properties, reactions, occurrences and uses. Wiley-VCH, Weinheim.
Das, S. and Hendry, M.J. (2011) Application of Raman spectroscopy to identify iron minerals commonly found in mine wastes. Chemical Geology: 290: 101-108.
Africano, F., Van Rompaey, G., Bernard, A., and Le Guern, F. (2002) Deposition of trace elements from high temperature gases of Satsuma-Iwojima volcano. Earth Planets Space: 54: 275-286.
Internet Links for Hematite
mindat.org URL:
https://www.mindat.org/min-1856.html
Please feel free to link to this page.
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Mineral Dealers:
Specimens:
The following Hematite specimens are currently listed for sale on minfind.com.
Significant localities for Hematite
Showing 29 significant localities out of 16,393 recorded on mindat.org.
Locality List




All localities listed without proper references should be considered as questionable.
Argentina | |
| [var: Martite] Raúl Jorge Tauber Larry´s collection. |
Austria | |
| A. Strasser: Die Minerale Salzburgs, 1989 |
Chile | |
| [var: Specularite] Maksaev, V., Townley, B., Palacios, C., and Camus, F. (2007): Metallic ore deposits. In: Moreno, T., and Gibbons, W. (editors): The Geology of Chile. The Geological Society (London), pp. 414. |
France | |
| Mboungou-Kongo J.B. (2002), L'hématite spéculaire du puy de Tunisset, Chaîne des Puys (Puy de Dôme), Le Régne Minéral, n°46, pp: 51-55 |
| Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997 |
| Favreau G., Meisser N., Chiappero P.J. (2004), Saint-Maime (Alpes-de-Haute-Provence): un exemple de pyrométamorphisme en région provençale, n°3, pp: 59-92 |
Ireland | |
| [var: Specularite] Barry Flannery (Personal Collection) |
Italy | |
| Piccoli, G.C. (2002): I minerali delle Alpi Marittime e Cozie. Provincia di Cuneo. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 362 pp.; Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 607 pp. |
| E. Grill (1911) - Osservazioni cristallografiche sull’ematite dell’Elba - R. Ist. Studi Sup. Prat. e Perf. Firenze. |
Orlandi, P., & Pezzotta, A., 1997. I minerali dell'Isola d'Elba. I minerali dei Giacimenti metalliferi dell'Elba orientale e delle Pegmatiti del Monte Capanne. Ed. Novecento Grafico, Bergamo, 245 pp.; Benvenuti, N., Dini, A., D’Orazio, M., Chiarantini, L., Corretti, A., Costagliola, P. (2013): The tungsten and tin signature of iron ores from Elba Island (Italy): a tool for provenance studies of iron production in the Mediterranean Region. Archaeometry, 55, 3, 479–506. | |
| Orlandi P., Dini A., Gemignani E., Pierotti L., Quilici U., Romani U., 2002. Paragenesi alpine nelle Alpi Apuane: I minerali delle vene di quarzo della Valle dell'Acqua Bianca, Gorfigliano (LU) Riv. Mineral. It., 26, 4: 216-223 |
| Dini A., Bramanti A., Mancini S., Orlandi P. (1997) - La lazulite del Monte Folgorito (Alpi Apuane), Pietrasanta, Lucca - Rivista Mineralogica Italiana, Milano, Fasc. 2, 1997 |
| Biagioni C., 2004. Le mineralizzazioni manganesifere dei Diaspri Auctt. di Vagli (Alpi Apuane, Lucca). Tesina di laurea inedita, Università di Pisa. |
Morocco | |
| Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68 |
Norway | |
| Vogt (1892b, pp. 119-121); Neumann (1985, p. 63); S. Flaata (1990). |
Spain | |
| - Calvo, M. (2008). Minerales de Aragón. Prames, Zaragoza, 463 pags. |
| Fuertes Acevedo, M. (1884): Mineralogía asturiana. Catálogo descriptivo de las sustancias así metálicas como lapídeas de la provincia de Asturias. Imprenta del Hospicio Provincial. 224 pp. Calvo, M. (2009): Minerales y Minas de España. Vol. IV, Óxidos e Hidróxidos. Escuela Técnica Superior de Ingenieros de Minas de Madrid - Fundación Gómez Pardo. 752 pp |
| Fuertes Acevedo, M. (1884): Mineralogía asturiana. Catálogo descriptivo de las sustancias así metálicas como lapídeas de la provincia de Asturias. Imprenta del Hospicio Provincial. 224 pp. |
Switzerland | |
| Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 207. |
UK | |
| No reference listed |
USA | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 195, 246. |
| self-collected by C. Lemanski, Jr. |
| P. Cristofono collection |
| Powell, Richard C. and Wolfgang Vogt. (1987), Cinque Quarry, A Suburban Site in Connecticut Makes Collecting a Cinch. Rock and Gem: (6): 36-39. |
| Michael W. Kieron collection |
St Christophe-en-Oisans, Bourg d'Oisans, Isère, Auvergne-Rhône-Alpes, France