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About StevensiteHide

Edwin Augustus Stevens
White, Pale Yellow, Pale Brown, Pale Pink
Waxy, Earthy
Specific Gravity:
2.15 - 2.57
Crystal System:
Member of:
Named after Edwin Augustus Stevens [July 28, 1795- August 8, 1868], founder of the Stevens Institute of Technology, Hoboken, New Jersey (USA). The mineral "stevensite" was named for Edwin Augustus Stevens in recognition of the high technical expertise achieved by engineering graduates of his college. Stevens was a co-founder of the Union Line Transportation Company in 1823, but which began operation in the 1830's with one of the first railroads in the USA.
Isostructural with:
This page provides mineralogical data about Stevensite.

Classification of StevensiteHide

Approved, 'Grandfathered' (first described prior to 1959), Questionable

9 : SILICATES (Germanates)
E : Phyllosilicates
C : Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
3 : Sheets of 6-membered rings with 2:1 clays

14 : Silicates not Containing Aluminum
4 : Silicates of Mg

Pronounciation of StevensiteHide

PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of StevensiteHide

Waxy, Earthy
White, Pale Yellow, Pale Brown, Pale Pink
2½ on Mohs scale
High hardness may be due to relict pectolite
Usually in clay-sized particles
2.15 - 2.57 g/cm3 (Measured)    2.07 g/cm3 (Calculated)
May have relict pectolite

Optical Data of StevensiteHide

Biaxial (+)
RI values:
nα = 1.500 - 1.560 nβ = 1.500 - 1.560 nγ = 1.510 - 1.570 n = 1.50 - 1.51
Max Birefringence:
δ = 0.010
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Optical Extinction:
May be isotropic
High refractive indices may be due to dehydration or transition to nontronite, etc.

Chemical Properties of StevensiteHide

IMA Formula:
Common Impurities:

Crystallography of StevensiteHide

Crystal System:
Cell Parameters:
a = 5.26 Å, b = 9.108 Å, c = 15.3 Å
a:b:c = 0.578 : 1 : 1.68
Unit Cell V:
0.00 ų (Calculated from Unit Cell)
Usually clay-sized particles

X-Ray Powder DiffractionHide

Powder Diffraction Data:
15.5 Å(100)
5.0 Å(10)
4.53 Å(35)
4.30 Å(1)
3.10 Å(12)
2.57 Å(`1)
2.54 Å(12)
2.49 Å(1)
2.27 Å(4)
1.91 Å(4)
1.87 Å(6)
1.71 Å(4)
1.518 Å(15)
25-1498; Basal spacing variable as is the case with Smectite. Dehydrated stevensite may have a 14 A spacing. Expands with intercalation.

Type Occurrence of StevensiteHide

Synonyms of StevensiteHide

Other Language Names for StevensiteHide

Varieties of StevensiteHide

GhassouliteA magnesium-rich tri-octahedral smectite corresponding to stevensite.

Relationship of Stevensite to other SpeciesHide

Member of:
Other Members of this group:
AliettiteCa0.2Mg6((Si,Al)8O20)(OH)4 · 4H2OMon.
Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2OMon.
Calcium-MontmorilloniteCa(Ca3,Al2)Si5O10(OH)8 or near
FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2OMon.
Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2OMon. 2/m : B2/m
NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2OMon.
PimeliteNi3Si4O10(OH)2 · 4H2OHex.
SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2OMon.
SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2OMon.
SwineforditeLi(Al,Li,Mg)4((Si,Al)4O10)2(OH,F)4 · nH2OMon.
VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2OMon. 2/m
VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2OMon.
Yakhontovite(Ca,Na)0.5(Cu,Fe,Mg)2(Si4O10)(OH)2 · 3H2OMon.
ZincsiliteZn3Si4O10(OH)2 · 4H2O (?)Mon.

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Stevensite associated with CalciteCaCO3
1 photo of Stevensite associated with PectoliteNaCa2Si3O8(OH)
1 photo of Stevensite associated with LaumontiteCaAl2Si4O12 · 4H2O
1 photo of Stevensite associated with DiopsideCaMgSi2O6

Related Minerals - Nickel-Strunz GroupingHide

9.EC.BalestraiteKLi2V5+Si4O12Mon. 2 : B2
9.EC.05MinnesotaiteFe2+3Si4O10(OH)2Tric. 1 : P1
9.EC.05TalcMg3Si4O10(OH)2Tric. 1 : P1
9.EC.9.EC.VoloshiniteRb(LiAl1.51.5)(Al0.5Si3.5)O10F2Mon. 2/m : B2/b
9.EC.10PyrophylliteAl2Si4O10(OH)2Tric. 1
9.EC.15CeladoniteK(Mg,Fe2+)Fe3+(Si4O10)(OH)2Mon. 2/m : B2/m
9.EC.15Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4Mon. 2/m : B2/m
9.EC.15MuscoviteKAl2(AlSi3O10)(OH)2Mon. 2/m : B2/b
9.EC.15RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2Mon. 2/m : B2/b
9.EC.15ChromphylliteK(Cr,Al)2(AlSi3O10)(OH,F)2Mon. 2/m : B2/b
9.EC.15FerroaluminoceladoniteK(Fe2+,Mg)(Al,Fe3+)(Si4O10)(OH)2Mon. 2/m : B2/m
9.EC.15FerroceladoniteK(Fe2+,Mg)(Fe3+,Al)(Si4O10)(OH)2Mon. 2/m : B2/m
9.EC.20AnniteKFe2+3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20HendricksiteKZn3(Si3Al)O10(OH)2Mon. 2/m : B2/m
9.EC.20NorrishiteKLiMn3+2(Si4O10)O2Mon. 2/m : B2/m
9.EC.20PhlogopiteKMg3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20PolylithioniteKLi2Al(Si4O10)(F,OH)2Mon. 2/m : B2/b
9.EC.20FluorotetraferriphlogopiteKMg3(Fe3+Si3O10)F2Mon. 2/m : B2/m
9.EC.20Wonesite(Na,K)(Mg,Fe,Al)6((Al,Si)4O10)2(OH,F)4Mon. 2/m : B2/m
9.EC.20TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2Mon. 2/m : B2/b
9.EC.20ShirokshiniteKNaMg2(Si4O10)F2Mon. 2/m : B2/m
9.EC.20ShirozuliteKMn2+3(Si3Al)O10(OH)2Mon. 2/m : B2/m
9.EC.20AspidoliteNaMg3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20FluorophlogopiteKMg3(Si3Al)O10F2Mon. 2/m : B2/m
9.EC.20Suhailite(NH4)Fe2+3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20YangzhumingiteKMg2.5(Si4O10)F2Mon. 2/m : B2/m
9.EC.20OrloviteKLi2Ti(Si4O10)OFMon. 2 : B2
9.EC.20OxyphlogopiteK(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2Mon. 2/m : B2/m
9.EC.35Anandite(Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2Mon. 2/m : B2/b
9.EC.35BityiteLiCaAl2(AlBeSi2O10)(OH)2Mon. 2/m : B2/b
9.EC.35ClintoniteCaAlMg2(SiAl3O10)(OH)2Mon. 2/m : B2/m
9.EC.35Oxykinoshitalite(Ba,K)(Mg,Ti,Fe3+,Fe2+)3((Si,Al)4O10)(O,OH,F)2Mon. 2/m : B2/m
9.EC.35FluorokinoshitaliteBaMg3(Al2Si2O10)F2Mon. 2/m : B2/m
9.EC.40Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2OMon.
9.EC.40Kurumsakite(Zn,Ni,Cu)8Al8V5+2Si5O35 · 27H2O (?)Orth.
9.EC.40Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2OMon. 2/m : B2/m
9.EC.40NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2OMon.
9.EC.40VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2OMon.
9.EC.40Yakhontovite(Ca,Na)0.5(Cu,Fe,Mg)2(Si4O10)(OH)2 · 3H2OMon.
9.EC.45SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2OMon.
9.EC.45SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2OMon.
9.EC.45SpadaiteMgSiO2(OH)2 · H2O (?)
9.EC.45SwineforditeLi(Al,Li,Mg)4((Si,Al)4O10)2(OH,F)4 · nH2OMon.
9.EC.45ZincsiliteZn3Si4O10(OH)2 · 4H2O (?)Mon.
9.EC.45FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2OMon.
9.EC.50VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2OMon. 2/m
9.EC.55Baileychlore(Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8Tric. 1
9.EC.55ClinochloreMg5Al(AlSi3O10)(OH)8Mon. 2/m : B2/m
9.EC.55Cookeite(Al,Li)3Al2(Si,Al)4O10(OH)8Mon. 2/m
9.EC.55FranklinfurnaceiteCa2Fe3+Mn2+3Mn3+(Zn2Si2O10)(OH)8Mon. 2 : B2
9.EC.55DonbassiteAl2(Si3Al)O10(OH)2 · Al2.33(OH)6Mon. 2 : B2
9.EC.55GlagoleviteNa(Mg,Al)6(AlSi3O10)(OH,O)8Tric. 1 : P1
9.EC.60AliettiteCa0.2Mg6((Si,Al)8O20)(OH)4 · 4H2OMon.
9.EC.60Corrensite(Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2OOrth.
9.EC.60HydrobiotiteK(Mg,Fe2+)6((Si,Al)8O20)(OH)4 · nH2OMon.
9.EC.60Karpinskite(Ni,Mg)2Si2O5(OH)2 (?)Mon.
9.EC.60Rectorite(Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2OMon.
9.EC.60TosuditeNa0.5(Al,Mg)6((Si,Al)8O18)(OH)12 · 5H2OMon. 2 : B2
9.EC.60BrinrobertsiteNa0.3Al4(Si4O10)2(OH)4 · 3.5 H2OMon.
9.EC.70BurckhardtitePb2(Fe3+Te6+)[AlSi3O8]O6Trig. 3m (3 2/m) : P3 1m
9.EC.75Ferrisurite(Pb,Ca)2.4Fe3+2(Si4O10)(CO3)1.7(OH)3 · nH2OMon.
9.EC.75Niksergievite(Ba,Ca)2Al3(AlSi3O10)(CO3)(OH)6 · nH2OMon.

Related Minerals - Dana Grouping (8th Ed.)Hide

71.3.1b.1Sobotkite(K,Ca0.5)0.33(Mg0.66Al0.33)3(Si3Al)O10(OH)2 · 1-5H2OMon.
71.3.1b.2SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2OMon.
71.3.1b.3SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2OMon.
71.3.1b.5PimeliteNi3Si4O10(OH)2 · 4H2OHex.
71.3.1b.7Yakhontovite(Ca,Na)0.5(Cu,Fe,Mg)2(Si4O10)(OH)2 · 3H2OMon.
71.3.1b.8ZincsiliteZn3Si4O10(OH)2 · 4H2O (?)Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.4.1ForsteriteMg2SiO4Orth. mmm (2/m 2/m 2/m)
14.4.2EnstatiteMg2Si2O6Orth. mmm (2/m 2/m 2/m) : Pbca
14.4.3ClinoenstatiteMgSiO3Mon. 2/m : P21/b
14.4.5ClinochrysotileMon. 2/m
14.4.8LizarditeMg3(Si2O5)(OH)4Trig. 3m : P3 1m
14.4.9TalcMg3Si4O10(OH)2Tric. 1 : P1
14.4.10SpadaiteMgSiO2(OH)2 · H2O (?)
14.4.11SepioliteMg4(Si6O15)(OH)2 · 6H2OOrth. mmm (2/m 2/m 2/m) : Pnna
14.4.12LoughliniteNa2Mg3Si6O16 · 8H2OOrth.
14.4.15AntigoriteMg3(Si2O5)(OH)4Mon. m : Bm
14.4.16 Magnesio-anthophyllite◻{Mg2}{Mg5}(Si8O22)(OH)2

Fluorescence of StevensiteHide

Not fluorescent

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for StevensiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Leeds, A.R. (1873) Contributions to mineralogy. American Journal of Science and Arts: 6: 22-26.
Chester, A.H. (1896) Stevensite. in: A Dictionary of the Names of Minerals including their History and Etymology, John Wiley and Sons (New York) 257-257.
Faust, G.T., Murata, K.J. (1953) Stevensite, redefined as a member of the montmorillonite group. American Mineralogist: 38: 973.
Faust, G.T., Murata, K.J., Millot, G. (1959) A restudy of stevensite and allied minerals. American Mineralogist: 44: 343-370.
Guven, N., Carney, L.L. (1979) The hydrothermal transformation of sepiolite to stevensite and the effect of added chlorides and hydroxides. Clays and Clay Minerals: 27: 253-260.
Bulletin de la Société française de Minéralogie et de Cristallographie (1980): 103: 579.

Internet Links for StevensiteHide

Localities for StevensiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Tasmania
    • Circular Head municipality
      • Marrawah district
        • Redpa
    • Waratah-Wynyard municipality
      • Heazlewood district
Anderson, P., Bottrill, R. & Davidson, P. (2002): Famous mineral localities: The Lord Brassey mine, Tasmania. Mineralogical Record 33, 321-332
  • Lower Austria
    • Krems-Land District
      • Albrechtsberg an der Großen Krems
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
  • Potosí
    • Sud Lípez Province
      • Pastos Grandes
Bougeault, C., Vennin, E., Durlet, C., Muller, E., Mercuzot, M., Chavez, M., ... & Gaucher, E. C. (2019) Biotic–Abiotic Influences on Modern Ca–Si-Rich Hydrothermal Spring Mounds of the Pastos Grandes Volcanic Caldera (Bolivia). Minerals, 9(6), 380.
  • Québec
    • Chaudière-Appalaches
      • Les Appalaches RCM
        • Thetford Mines
GSC collection specimen
  • Saxony
    • Vogtlandkreis
      • Plauen
        • Röttis
Sehrig, M. (2007): "Stevensite" von Röttis bei Plauen/Vogtland [Lapis Leserpost].LAPIS 32 (5), 7
  • Fejér County
    • Székesfehérvár District
      • Kőszárhegy
Szakáll: Minerals of Szár Hill, 2004
  • Liguria
    • La Spezia Province
      • Borghetto di Vara
Balestra, C., Castellaro, F., Kampf, A.R., Vajda, E., and Esposito, M. (2020) La miniera di Cerchiara, Borghetto di Vara, Levante Ligure: recenti identificazioni e stato dell’arte. Micro, 18, 2-29 (in Italian).
  • Lombardy
    • Sondrio Province
      • Val Masino
IVM Magazine - Bulletin of the Institute of Mineralogy "F. Grazioli" number; 1 / 2008 "Reporting the discovery of Stevens in Val di Preda Rossa resulting. analysis by Athos Callegari Department of Earth Sciences, University of Pavia.
  • Iwate Prefecture
    • Kamaishi City
TAKABUMI SAKAMOTO, RYOHEI OTSUKA, NAOYA IMAI ( ) STEVENSITE FROM THE KAMAISHI MINE, IWATE PREFECTURE, JAPAN The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists Vol. 70(1975) No. 1
  • Mie Prefecture
    • Toba City
Yamada, S. (2004) Nihonsan-koubutsu Gojuon-hairetsu Sanchi-ichiranhyou (111 pp.)
  • Niigata Prefecture
    • Shibata City
  • Yamagata Prefecture
    • Mogami District
      • Mogami
Otsu, H., Shimazaki, Y., & Omachi, K. (1963). Stevensite from the Ohori mine. Bull. Geol. Surv. Jap, 14, 591-599.
  • Fès-Meknès Region
    • Boulemane Province
      • Boulemane Cercle
        • Boulemane Caïdat
MINERALOGICAL AND PHYSICOCHEMICAL INVESTIGATION OF Mg-SMECTITE FROM JBEL GHASSOUL, MOROCCO, A. Benhammou, B. Tanouti, L. Nibou, A. Yaacoubi and J.-P. Bonnet; Clays and Clay Minerals; v. 57 p. 264 (2009). ANALYSES OF PALYGORSKITES AND ASSOCIATED CLAYS FROM THE JBEL RHASSOUL (MOROCCO) A. Chahi, J. Duplay, J. Luca; Clays and Clay Minerals; v. 41 p. 401 (1993).
  • Buskerud
Bancroft, P., Nordrum, F.S. & Lyckberg, P.(2001): Kongsberg revisited. Mineralogical Record 32: 181-205
Pacific Ocean
  • East Pacific Rise
    • Juan de Fuca Ridge complex
      • Southern Gorda Ridge
Tuomo Törmänen (2005) Ore Mineralogy, Geochemistry, and Formation of the Sediment-hosted Sea Floor Massive Sulfide Deposits at Escanaba Trough, NE Pacific, with Emphasis on the Transport and Deposition of Gold. Thesis University of Oulu
  • Lower Silesian Voivodeship
    • Ząbkowice Śląskie County
      • Gmina Ząbkowice Śląskie
  • Caraş-Severin
    • Moldova Nouă-Sasca Cu-Mo ore field
  • Bashkortostan
    • Baymak-Buribay District
Contributions to Mineralogy and Petrology Volume 147, Number 3, 363-383
  • Murmansk Oblast
    • Kovdor Massif
Sorokhtina, N.V., Chukanov, N.V., Voloshin, A.V., Pakhomovsky, Y.A., Bogdanova, A.N., and Moiseev, M.M. (2008): Geology of Ore Deposits 50(7), 620-628.
  • Trnava Region
    • Trnava District
      • Smolenice
Uher, P., Bačík P., Ozdín D. & Hornáček M., 2010: Datolit z permských metabazaltov na lokalite Lošonec (Malé Karpaty, JZ Slovensko). Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze, 18, 2, 91-95.
South Africa
  • Northern Cape
Cairncross/Dixon, 1995. Cairncross, B., Dixon, R. (1995) Cairncross, B., Dixon, R. (1995) Minerals of South Africa. Geological Society of South Africa, PO Box 44283, Linden 2104, South Africa.
  • Värmland County
    • Filipstad
      • Långban Ore District
Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
      • Nordmark District
No reference listed
No reference listed
  • England
    • Cornwall
      • Mawgan-in-Meneage
        • Goonhilly Downs
[Golley & Williams, 1995, 58 - "Cornish Mineral Reference Manual"]
      • St Keverne
[Golley & Williams, 1995, 58 - "Cornish Mineral Reference Manual"]
    • Northumberland
      • Chollerton
[Specimen in the Natural History Museum, London]; Peter G. Embrey (1978) Fourth Supplementary List of British Minerals. Mineralogical Magazine 42:169-177; B. A. O. Randall (1959) Stevensite from the Whin Sill in the Region of the North Tyne. Mineralogical Magazine 32:218-225
  • Scotland
    • City of Edinburgh
  • Wales
    • Gwynedd
      • Pwllheli
National Museum of Wales collection
  • Arizona
    • Cochise County
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.:66
        • Queen Hill
          • Copper Queen Mine (Halero Mine)
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 166.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 381.
  • Arkansas
Howard, 1987. Mineral Species of Arkansas, addenda
  • California
    • San Benito Co.
      • New Idria Mining District
        • Picacho Peak
Joseph F. Cooper Jr., Gail E. Dunning, Ted A.Hadley (2003) Minerology of the Victor Claim, Clear Creek Area, New Idria District, San Benito County, California.
        • Santa Rita Peak
AmMin 47:996; MILTON, C. (1977): Mineralogy of the Green River Formation. Mineralogical Record 8, 368-379.
  • Maine
    • Knox Co.
Anderson, 1991. Maine Mineral Localities, 2nd ed.
King & Foord, 1994. Mineralogy of Maine, V.1.
  • Nevada
    • Nye Co.
Clays and Clay Minerals, v. 30, p. 321-326
    • White Pine Co.
NBMG Spec. Pub. 31 Minerals of Nevada
  • New Jersey
    • Bergen Co.
      • Fort Lee
Focus on Fort Lee - A Key and Guide to the Minerals of Fort Lee.; Rocks & Min. (1963) 38:591-592
    • Bergen Co. & Hudson Co.
AmMin 44:342 (1959)
    • Essex Co.
      • Millburn Township
        • Short Hills
The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 5, No. 1, Manchester, J.G. (1931): 91.
      • Verona Township
The Minerals of New York City & Its Environs, New York Mineralogical Club Bull., Vol. 3, No. 1, Manchester, J.G. (1931): 96.
    • Hudson Co.
      • Secaucus
Minerals of Laurel Hill, Secaucus, NJ, Facciolla, N.W. (published privately).
    • Passaic Co.
      • Little Falls Township
        • Great Notch
Mins. of NYC & Its Environs, NY Min. Club. (1931), Manchester; NJ Geol. Survey Bull. #64 (1960), Mason, B.
      • Paterson
No reference listed
Rocks & Min.:59:157-183, Peters, Joseph J. (1984); Amer. Museum of Nat. History, NY, specimen.
American Museum of Nat. History, NY & Paterson, NJ, Museum specimens; Rocks & Min.: 59:157-183, Peters, J.J. (1984)
      • Prospect Park
Lapidary Jour.: 32:1700-1720, Mins. of the Watchungs, Part II, Vitali, G. (1978); Rocks & Min.: 59:157-183 (1984), Peters, J.J.
    • Union Co.
      • Springfield Township
        • Springfield
Rocks & Min.:13:75-79.
Rocks & Min.:13:75-79.
The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 5, No. 1, Manchester, J.G. (1931): 93.
The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931):94.
  • New Mexico
    • Eddy Co.
      • Carlsbad Caverns National Park
Clays and Clay Minerals; June 2000; v. 48; no. 3; p. 317-321
    • Sandoval Co.
Minerals of New Mexico 3rd ed.
  • New York
    • Essex Co.
Jensen (1978) Minerals of New York State,p.163
DeRudder & Beck 11th National Conference on clay minerals 188-199
    • New York City
      • Staten Island (Richmond Co.)
Collected by Steve Okulewicz
  • North Carolina
    • Mitchell Co.
      • Cane Creek Section
        • Bakersville
Faust,George T.,Hathaway,John C.and Millot, Georges(1959)A Restudy of Stevensite and Allied Minerals;The American Mineralogist Vol.44, March-April
  • Utah
    • Duchesne Co.
  • Virginia
    • Amherst Co.
      • Piney River area
Minerals of Virginia 1990 by R. V. Dietrich
  • Wisconsin
Hawley, J. & A. Bevan (1934) Mineralogy and genesis of the Mayville iron ore of Wisconsin: American Mineralogist: 19 (11): 493- 514.
Mineral and/or Locality  
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