Sepiolite Group
A material that is NOT an approved mineral species
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About Sepiolite Group
Unique Identifiers
Mindat ID:
35733
Long-form identifier:
mindat:1:1:35733:9
GUID
(UUID V4):
(UUID V4):
a05cad78-0868-4663-8889-689e6267152b
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) |
|---|---|---|---|---|---|---|---|
| 0004269 | Sepiolite | Post J E, Bish D L, Heaney P J (2007) Synchrotron powder X-ray diffraction study of the structure and dehydration behavior of sepiolite American Mineralogist 92 91-97 |  | 2007 | Durango, Mexico | 0 | 293 |
| 0004270 | Sepiolite | Post J E, Bish D L, Heaney P J (2007) Synchrotron powder X-ray diffraction study of the structure and dehydration behavior of sepiolite American Mineralogist 92 91-97 | | 2007 | Durango, Mexico | 0 | 293 |
| 0018529 | Sepiolite | Sanchez M, Garcia-Romero E, Suarez M, Silva I, Fuentes-Montero L, Martinez-Criado G (2011) Variability in sepiolite: Diffraction studies American Mineralogist 96 1443-1454 | 2011 | Batallones, Madrid, Spain | 0 | 498 | |
| 0018530 | Sepiolite | Sanchez M, Garcia-Romero E, Suarez M, Silva I, Fuentes-Montero L, Martinez-Criado G (2011) Variability in sepiolite: Diffraction studies American Mineralogist 96 1443-1454 | 2011 | Batallones, Madrid, Spain | 0 | 298 | |
| 0018531 | Sepiolite | Sanchez M, Garcia-Romero E, Suarez M, Silva I, Fuentes-Montero L, Martinez-Criado G (2011) Variability in sepiolite: Diffraction studies American Mineralogist 96 1443-1454 | 2011 | Grant County, New Mexico, USA | 0 | 498 | |
| 0018532 | Sepiolite | Sanchez M, Garcia-Romero E, Suarez M, Silva I, Fuentes-Montero L, Martinez-Criado G (2011) Variability in sepiolite: Diffraction studies American Mineralogist 96 1443-1454 | 2011 | Grant County, New Mexico, USA | 0 | 298 | |
| 0018533 | Sepiolite | Sanchez M, Garcia-Romero E, Suarez M, Silva I, Fuentes-Montero L, Martinez-Criado G (2011) Variability in sepiolite: Diffraction studies American Mineralogist 96 1443-1454 | 2011 | Fauske, Nordland, Norway | 0 | 498 | |
| 0018534 | Sepiolite | Sanchez M, Garcia-Romero E, Suarez M, Silva I, Fuentes-Montero L, Martinez-Criado G (2011) Variability in sepiolite: Diffraction studies American Mineralogist 96 1443-1454 | 2011 | Fauske, Nordland, Norway | 0 | 298 | |
| 0018363 | Sepiolite | Giustetto R, Levy D, Wahyudi O, Ricchiardi G, Vitillo J G (2011) Crystal structure refinement of a sepiolite/indigo Maya Blue pigment using molecular modelling and synchrotron diffraction European Journal of Mineralogy 23 449-466 | 2011 | Germany | 0 | 293 | |
| 0018364 | Sepiolite | Giustetto R, Levy D, Wahyudi O, Ricchiardi G, Vitillo J G (2011) Crystal structure refinement of a sepiolite/indigo Maya Blue pigment using molecular modelling and synchrotron diffraction European Journal of Mineralogy 23 449-466 | 2011 | synthetic | 0 | 293 | |
| 0015633 | Sepiolite | Brauner K, Preisinger A (1956) Struktur und entstehung des sepioliths Tschermaks Mineralogische und Petrographische Mitteilungen 6 120-140 | 1956 | 0 | 293 |
CIF Raw Data - click here to close
Relationship of Sepiolite Group to other Species
Group Members:
| Falcondoite | (Ni,Mg)4Si6O15(OH)2 · 6H2O | Orth. |
| Ferrisepiolite | (Fe3+,Fe2+,Mg)4((Si,Fe3+)6O15)(O,OH)2 · 6H2O | Orth. mmm (2/m 2/m 2/m) |
| Loughlinite | Na2Mg3Si6O16 · 8H2O | Orth. mmm (2/m 2/m 2/m) |
| Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O | Orth. mmm (2/m 2/m 2/m) : Pnna |
Minerals structurally related to group:
| Kalifersite | (K,Na)5Fe3+7Si20O50(OH)6 · 12H2O |
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.
Internet Links for Sepiolite Group
mindat.org URL:
https://www.mindat.org/min-35733.html
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References for Sepiolite Group
Reference List:
Localities for Sepiolite Group
symbol to view information about a locality.
The 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.
Argentina | |
| [Sepiolite] Hayase et al. (1970) |
Atlantic Ocean | |
| [Sepiolite] Ayupova et al. (2018) |
| [Sepiolite] Milinovic +6 other references | |
Australia | |
| [Sepiolite] Segnit (1973) |
| [Sepiolite] Sorrell (n.d.) |
| [Sepiolite] Sielecki (1988) |
| [Sepiolite] | |
| [Sepiolite] Updated list originally distributed by ... | |
| [Sepiolite] part of list University of Queensland |
| [Sepiolite] Sorrell (n.d.) |
| [Sepiolite] |
| [Falcondoite] Bottrill et al. (2008) |
| [Sepiolite] Graham (2003) |
| [Sepiolite] Grguric (2003) |
Austria | |
| [Sepiolite] Niedermayr et al. (1995) |
| [Sepiolite] Pichler (2009) |
| [Sepiolite] Helmut Pristacz PXRD analysis 8/09 +1 other reference |
| [Sepiolite] Pristacz et al. (2009) |
| [Sepiolite] SIGMUND (1937a) |
| [Sepiolite] Exel (1993) |
| [Sepiolite] Huber et al. (1977) |
| [Sepiolite] Exel (1993) |
| [Sepiolite] Steinwender et al. (2012) |
| [Sepiolite] Strasser (1989) |
| [Sepiolite] Exel (1993) |
| [Sepiolite] Hackenberg 2003 |
| [Sepiolite] Exel (1993) |
| [Sepiolite] Neschen (n.d.) |
| [Sepiolite] Hollerer (1999) |
| [Sepiolite] Aufschluss 1972 (SB) +1 other reference |
| [Sepiolite] Exel (1993) |
| [Sepiolite] Exel (1993) |
| [Sepiolite] Neschen (n.d.) |
Belarus | |
| [Ferrisepiolite] Levitskiy et al. (2018, July) |
Belgium | |
| [Sepiolite] Hugget et al. (1996) +2 other references |
Brazil | |
| [Sepiolite] A. C. Bastos Neto et al. (2009) |
| [Sepiolite] Ratié et al. (2015) |
Canada | |
| [Sepiolite] C. J. A. Coats and R. Buchan (1979) |
| [Sepiolite] 162-165. +1 other reference |
| [Sepiolite] Springer (1989) |
| [Sepiolite] Sabina (1982) |
| [Sepiolite] Geological survey of canada misc report ... +1 other reference |
| [Sepiolite] Montgomery (n.d.) |
| [Sepiolite] 166-175. +2 other references |
| [Sepiolite] Shang (2000) |
Chile | |
| [Sepiolite] XRD by Joachim Lorenz |
China | |
| [Sepiolite] Wenguang Li (1997) +1 other reference |
| [Sepiolite] Many of these pieces are referred to as ... | |
| [Sepiolite] Ruishi Yang and Wenguang Li (2001) |
| [Sepiolite] Ruishi Yang and Wenguang Li (2001) | |
| [Sepiolite] Ruishi Yang and Wenguang Li (2001) |
| [Sepiolite] Yongzhang Zhou et al. (1993) |
| [Sepiolite] Wenguang Li (1997) +1 other reference |
| [Ferrisepiolite] Qingchang Meng (1981) |
| [Sepiolite] Wenguang Li (1997) +1 other reference |
| [Sepiolite] Sakamoto et al. (1988) +1 other reference |
| [Ferrisepiolite] Williams et al. (2011) +1 other reference |
| [Sepiolite] Chang Xu (1985) |
| [Sepiolite] Ruishi Yang and Wenguang Li (2001) |
| [Sepiolite] Liu et al. (2015) |
| [Sepiolite] Industrial Minerals and Processing 33 (12) |
| [Sepiolite] Chang Xu (1985) |
| [Loughlinite] ZHANG et al. (2018) |
| [Sepiolite] Ruishi Yang and Wenguang Li (2001) |
| [Sepiolite] Kaiji Yu (1981) |
| [Sepiolite] Ruishi Yang and Wenguang Li (2001) |
Colombia | |
| [Sepiolite] Econ Geol (2004) +1 other reference |
| [Sepiolite] Castellanos-Alarcón et al. (2016) |
Czech Republic | |
| [Sepiolite] Pauliš P. Mineralogické lokality ... |
| [Sepiolite] Pauliš +4 other references | |
| [Sepiolite] Zikeš J. |
| [Sepiolite] Ulrych |
| [Sepiolite] Houzar |
| [Sepiolite] Koníčková Š. et al. (2016) |
| [Sepiolite] Helmut Pristacz jr. PXRD analysis 8/09 (specimen in doubles collection in NHM Vienna) |
| [Sepiolite] Pelíšek | |
Dominican Republic | |
| [Falcondoite] Villanova-de-Benavent et al. (2014) |
| [Sepiolite] Domènech et al. (2022) | |
| [Falcondoite] Springer (1976) | |
France | |
| [Sepiolite] |
| [Sepiolite] G. Demarcq |
| [Sepiolite] The Quincyte pigments: fossil quinones ... |
| [Sepiolite] "Les minéraux et al. (1977) |
| [Sepiolite] Manceau et al. (1985) |
| [Sepiolite] "Les minéralisations associées au volcanisme andésitique de Biot-Villeneuve Loubet (Alpes Maritimes) |
Germany | |
| [Sepiolite] Weisenberger et al. (2014) +1 other reference |
| [Sepiolite] Weisenberger et al. (2014) | |
| [Sepiolite] F. Müller: "Bayerns steinreiche Ecke" et al. (Hof) +1 other reference |
| [Sepiolite] F. Müller: "Bayerns steinreiche Ecke" et al. (Hof) |
| [Sepiolite] F. Müller: "Bayerns steinreiche Ecke" et al. (Hof) |
| [Sepiolite] Blaß et al. (2012) |
| [Sepiolite] Blaß et al. (2015) |
| [Sepiolite] Lapis 30 (7/8) |
Greece | |
| [Sepiolite] Färber (n.d.) |
| [Sepiolite] Sideridis et al. (2022) |
| [Sepiolite] Sideridis et al. (2022) | |
| [Sepiolite] Gauthier et al. (1991) |
Greenland | |
| [Sepiolite] Semenov (2001) +1 other reference |
| [Sepiolite var: Gunnbjarnite] American Mineralogist 37:1070-1071 |
Hungary | |
| [Sepiolite] Szakáll et al. (1996) |
| [Sepiolite] Szakáll & Jánosi (1996) |
Indonesia | |
| [Falcondoite] Sufriadin (2012) |
Iran | |
Italy | |
| [Ferrisepiolite] Imma Punzo find & collection |
| [Sepiolite] Bedognè et al. (1993) |
| [Sepiolite] Bedognè et al. (2006) |
| [Sepiolite] Vola (2020) |
| [Sepiolite] Glocker (1847) |
| [Sepiolite] www.webmineralshop.com (2001) |
| [Sepiolite] Ciriotti et al. (2011) |
| [Sepiolite] Piccoli et al. (2007) | |
| [Sepiolite] Piccoli et al. (2007) | |
| [Sepiolite] Exel (1987) |
| [Sepiolite] Garofalo et al. (2023) |
| [Sepiolite] Orlandi P. (2005) |
| [Sepiolite] Boscardin M. et al. (2011) |
| [Sepiolite] Zordan A. et al. (Vicenza) |
| [Sepiolite] Boscardin M. et al. (2011) +1 other reference |
Japan | |
| [Sepiolite] Masutomi Museum specimen (Kyoto) +1 other reference |
| [Sepiolite] Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan) |
| [Sepiolite] Yongzhang Zhou et al. (1993) | |
| [Sepiolite] Dr. Yohachiro Okamoto collection (conserved by the Geological Survey of Japan) |
| [Sepiolite] Dr. Matsuo Nambu collection (curated at Geological Survey of Japan) |
| [Sepiolite] Dr. Matsuo Nambu collection (curated at Geological Survey of Japan) |
| [Sepiolite] IMAI et al. (2000) |
| [Sepiolite] Imai (1978) |
| [Sepiolite] Ishibashi (1974) |
| [Sepiolite] Kato (2010) |
Kazakhstan | |
| [Falcondoite] Korobkin et al. (2022) |
| [Falcondoite] Korobkin et al. (2022) | |
Kenya | |
| [Sepiolite] Stoessell et al. (1978) +1 other reference |
Kosovo | |
| [Sepiolite] Miladinovic et al. (2016) |
| [Sepiolite] Ilich et al. (2002) | |
Madagascar | |
| [Sepiolite] Collection de Minéralogie (LMV) |
| [Sepiolite] Lautel (1953) |
| [Sepiolite] Lacroix (1941) |
| [Sepiolite] Behier (1963) | |
Malaysia | |
| [Sepiolite] Syed Hasan et al. (2018) |
| [Sepiolite] |
Mexico | |
| [Sepiolite] Forti (2006) |
| [Sepiolite] |
| [Sepiolite] Panczner (1987) |
Middle East | |
| [Sepiolite] Gross (1977) | |
Morocco | |
| [Sepiolite] S. Weiß: Lapis 31 (7/8) |
Namibia | |
| [Sepiolite] Wilde (2023) |
| [Loughlinite] Buch et al. (1996) |
New Zealand | |
| [Sepiolite] Cox (1882) |
North Macedonia | |
| [Sepiolite] Todor Serafimovski et al. (2012) |
| Hiessleitner (1934) |
Norway | |
| [Sepiolite] Garmo (2003) |
| [Sepiolite] Wel (1972) +1 other reference |
| [Sepiolite] Jahren et al. (1998) |
| [Sepiolite] "Sigurd Stordal" Collection +1 other reference |
| [Sepiolite] Nordrum (2010) |
| [Sepiolite] Berg et al. (2003) |
Pacific Ocean | |
| [Loughlinite] Fryer et al. (1992) |
Poland | |
| [Sepiolite] Eligiusz Szełęg private collection |
| [Sepiolite] Lewandowska A. (OH) |
| [Sepiolite] Gaweł A. et al. (2008) | |
| [Sepiolite] Eligiusz Szełęg collection | |
| [Sepiolite] Lis et al. (1986) |
| [Sepiolite] Domań +2 other references |
| [Sepiolite] Harańczyk C. (1974) |
| [Sepiolite] JANECZEK J. | |
| [Sepiolite] Lis et al. (1986) |
Romania | |
| [Sepiolite] www.minerals-of-the-carpathians +1 other reference |
| [Sepiolite] Gheorghiţescu et al. (1972) | |
| [Sepiolite] Szakáll (2002) |
Russia | |
| [Sepiolite] Talovina et al. (2008) |
| [Sepiolite] Talovina et al. (2008) |
| [Sepiolite] Berger +2 other references |
| [Sepiolite] Talovina et al. (2008) | |
| [Sepiolite] Mazurov et al. (2007) +1 other reference |
| [Sepiolite] Pekin et al. (2010) +1 other reference | |
| [Sepiolite] ... |
| [Ferrisepiolite] Pavel.M. Kartashov (n.d.) |
| [Ferrisepiolite] Nikita Chukanov analytical data | |
| [Sepiolite] Talovina et al. (2003) |
| [Sepiolite] Grant et al. (2001) |
| [Sepiolite] [World of Stones 12:49] | |
Saudi Arabia | |
| [Sepiolite] Abuamarah et al. (2023) |
Slovakia | |
| [Sepiolite] Koděra (1986) |
| [Sepiolite] Koděra (1986) | |
| [Sepiolite] Koděra (1986) | |
| [Falcondoite] e-rocks.com (n.d.) +2 other references |
| [Sepiolite] Ďuďa |
Slovenia | |
| [Sepiolite] Postl et al. (2015) |
Somalia | |
| [Sepiolite] www.mineralmundi.com |
South Africa | |
| [Loughlinite] Roelofse (2010) |
| [Loughlinite] Roelofse (2010) |
South America Plate | |
| [Sepiolite] Schrank et al. (2024) |
South Korea | |
| [Sepiolite] old "Chuseihokudo" specimen on sale at ... | |
Spain | |
| [Sepiolite] Calvo Rebollar (2016) |
| [Sepiolite] Calvo (2016) |
| [Sepiolite] Alejandro Sánchez Jiménez |
| [Sepiolite] Calvo (2008) |
| [Sepiolite] Calvo (2008) |
| [Sepiolite] Calvo (2008) |
| [Sepiolite] Calvo et al. (2014) |
| [Sepiolite] Yongzhang Zhou et al. (1993) |
| [Sepiolite] Stvdia Geologica Salmanticensia |
| [Sepiolite] Fernández Macarro et al. (1988) |
| [Sepiolite] Fernández Macarro et al. (1988) | |
| [Sepiolite] Alfredo Petrov. Joan Rosell. |
| [Sepiolite] Joan Rosell. Alfredo Petrov |
| [Sepiolite] Calvo (2018) |
| [Sepiolite] Ruishi Yang and Wenguang Li (2001) |
| [Sepiolite] Rodríguez et al. (1994) | |
| [Sepiolite] www.foro-minerales.com (n.d.) | |
| [Sepiolite] Alonso-Zarza et al. (2011) |
Sweden | |
| [Sepiolite] Gatedal (n.d.) +1 other reference |
| [Sepiolite] |
Switzerland | |
| [Sepiolite] Kipfer et al. (1979) +1 other reference |
Tajikistan | |
| [Sepiolite] Badalov et al. (1977) |
Tanzania | |
| [Sepiolite] Sampson (1966) |
Turkey | |
| [Loughlinite] Helvaci (1998) |
| [Loughlinite] Echle (1967) |
| [Sepiolite] Güngör Yeşilova et al. (2023) |
| [Sepiolite] |
| [Sepiolite] Karakaya et al. (2004) |
| [Sepiolite] Altay et al. (2010) |
UK | |
| [Sepiolite] Golley et al. (1995) |
| [Sepiolite] Power et al. (1997) |
| [Sepiolite] | |
| [Sepiolite] Power et al. (1997) | |
| [Sepiolite] Turner et al. (2010) |
| [Sepiolite] Day (1999) |
| [Sepiolite] Livingstone |
USA | |
| [Sepiolite] U. S. Geological Survey Open-File ... |
| [Sepiolite] Graeme (1981) |
| [Sepiolite] Anthony et al. (1995) |
| [Sepiolite] Anthony et al. (1995) |
| [Sepiolite] Anne Seminaris specimen +1 other reference |
| [Sepiolite] Anthony et al. (1995) |
| [Sepiolite] AmMin 27:512 | |
| [Sepiolite] Kauffman et al. (1943) +2 other references | |
| [Sepiolite] Anthony et al. (1995) | |
| [Sepiolite] Färber (n.d.) |
| [Sepiolite] a spectroscopic exploration. Economic ... +1 other reference |
| [Sepiolite] Hanks (1884) +1 other reference | |
| [Sepiolite] Post (1984) |
| [Sepiolite] Van Nostrand Reinholt Press: 441. +2 other references | |
| [Sepiolite] Van Nostrand Reinholt Press: 441. +2 other references |
| [Sepiolite] Van Nostrand Reinholt Press: 441. +3 other references |
| [Sepiolite] Dunning et al. (2005) |
| [Sepiolite] Otton +2 other references |
| [Sepiolite] - (2005) |
| [Sepiolite] Van Nostrand Reinholt Press: 441. +2 other references |
| [Sepiolite] XRD confirmed by Tony Kampf. +1 other reference |
| [Sepiolite] Collected by and in the collection of ... | |
| [Sepiolite] Collected by and in the collection of ... | |
| [Sepiolite] Van Nostrand Reinholt Press: 441. +2 other references |
| [Sepiolite] Mineralogical Record: 17:315 |
| [Sepiolite] Palache et al. (1944) |
| [Sepiolite] Similar samples from identical geology ... |
| [Sepiolite] Januzzi et al. (1976) +1 other reference |
| [Sepiolite] USGS Circular 1059 pp129-137 |
| [Sepiolite] Canadian Mineralogist Vol.24 (1986) | |
| [Sepiolite] Marc V. Hurst (2012) |
| [Sepiolite] Canadian Mineralogist Vol.24 (1986) |
| [Sepiolite] Cook (1978) |
| [Sepiolite] Cook (1978) | |
| [Sepiolite] Cook (1978) | |
| [Sepiolite] Ballard (1948) |
| [Loughlinite] Tank (1972) +1 other reference | |
| [Sepiolite] Ream (2004) |
| [Sepiolite] Identified and verified by SEM/EDS and ... |
| [Sepiolite] Ross (2007) |
| [Sepiolite] Sherwood et al. (1998) |
| [Sepiolite] The Mineralogy of The Butte District +1 other reference |
| [Sepiolite] Buck et al. (2006) |
| [Sepiolite] Castor et al. (2004) |
| [Sepiolite] Castor et al. (2004) |
| [Sepiolite] Castor et al. (2004) |
| [Sepiolite] www.globalgeo.com.au (2018) |
| [Sepiolite] Castor et al. (2004) |
| [Sepiolite] Rocks & Minerals |
| [Sepiolite] Guven et al. (1979) | |
| [Sepiolite] Castor et al. (2004) | |
| [Sepiolite] Maertens (2007) |
| [Sepiolite] Germine (1987) +1 other reference |
| [Sepiolite] McLemore et al. (1996) |
| [Sepiolite] Northrop et al. (1996) | |
| [Sepiolite] - (2005) | |
| [Sepiolite] Northrop et al. (1996) | |
| [Sepiolite] USGS Bull 1451 |
| [Sepiolite] USGS Bull 1451 | |
| [Sepiolite] USGS Bull 1451 | |
| [Sepiolite] Northrop et al. (1996) |
| [Sepiolite] Tankersley et al. (2016) |
| [Sepiolite] John H. Betts (2009) |
| [Sepiolite] New York State Museum collection |
| [Sepiolite] NY State Museum spec. no. 13870 |
| [Sepiolite] Rocks & Min. V.71 +1 other reference |
| [Sepiolite] Brindley (1959) | |
| [Sepiolite] | |
| [Sepiolite] Hadley et al. (1945) |
| [Sepiolite] Dana (1892) |
| [Sepiolite] - (2005) |
| [Sepiolite] Mineralogy of Pennsylvania - 1922 +1 other reference |
| [Sepiolite] ... | |
| [Sepiolite] Geyer and others (1976, Mineral Collecting in Pennsylvania, p. 132) |
| [Sepiolite] Miller |
| [Loughlinite] Bullock (1981) |
| [Sepiolite] Bullock (1981) | |
| [Sepiolite] Bullock (1981) +1 other reference |
| [Sepiolite] Bullock (1981) | |
| [Sepiolite] USGS TEI #514 +1 other reference |
| [Sepiolite] Bullock (1981) |
| [Sepiolite] Bullock (1981) |
| [Loughlinite] Milton (1977) |
| [Sepiolite] Rocks & Min. Vol. 71 (1996) |
| [Sepiolite] Rocks & Min.: 14:112-113. |
| [Sepiolite] Werner et al. (2006) |
| [Sepiolite] Cannon (1975) |
| [Loughlinite] Fahey et al. (1960) +1 other reference |
| [Loughlinite] Fahey et al. (1960) | |
| [Loughlinite] Fahey et al. (1960) | |
Venezuela | |
| [Sepiolite] Urbani (1996) |
| [Sepiolite] Franco Urbani (2009) |
Westvaco mine, Green River Basin, Sweetwater County, Wyoming, USA