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Genthelvite

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Fredrick August Ludwig Karl Wilhelm Genth
Formula:
Be3Zn4(SiO4)3S
Colour:
Colourless, white, yellow, green, pink to red, darkens to brown and black on weathering
Lustre:
Vitreous
Hardness:
6 - 6½
Specific Gravity:
3.44 - 3.70
Crystal System:
Isometric
Member of:
Name:
Named in 1944 by Jewel Jeannette Glass, Richard Henry Jahns, and Rollin Elbert Stevens for its relationship to helvine and for Fredrick August Ludwig Karl Wilhelm Genth [May 17, 1820 Wächtersbach, Hesse-Cassel - February 2, 1893 Philadelphia, Pennsylvania, USA], professor of mineralogy at the University of Pennsylvania. Genth first described genthelvite in 1892 but did not recommend a name. Genth's description appears in Am. Jour. Sci., 44, 385 (1892). Glass et al. (1944) named the mineral after Genth in the reference listed on the genthelvite descriptive page - see Am. Min., 29, nos. 3 & 4, 163-191 (1944).


Hide all sections | Show all sections

Classification of GenthelviteHide

Approved, 'Grandfathered' (first described prior to 1959)
9.FB.10

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
B : Tektosilicates with additional anions
Dana 7th ed.:
76.2.4.3
76.2.4.3

76 : TECTOSILICATES Al-Si Framework
2 : Al-Si Framework Feldspathoids and related species
17.9.3

17 : Silicates Containing other Anions
9 : Silicates with sulphide or sulphite

Physical Properties of GenthelviteHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
Colourless, white, yellow, green, pink to red, darkens to brown and black on weathering
Hardness:
6 - 6½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
on {111} and {111}
Fracture:
Irregular/Uneven
Density:
3.44 - 3.70 g/cm3 (Measured)    3.70 g/cm3 (Calculated)

Optical Data of GenthelviteHide

Type:
Isotropic
RI values:
nα = 1.738 - 1.752
Max Birefringence:
δ = 1.738 - Isotropic minerals have no birefringence
Surface Relief:
Moderate

Chemical Properties of GenthelviteHide

Formula:
Be3Zn4(SiO4)3S
Common Impurities:
Al,Fe,Mn,Cu

Crystallography of GenthelviteHide

Crystal System:
Isometric
Class (H-M):
4 3m - Hextetrahedral
Space Group:
P4 3n
Cell Parameters:
a = 8.12(2) Å
Unit Cell V:
535.39 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals commonly tetrahedral and tristetrahedra, up to 5 cm in diameter; also as large rounded grains to 25cm

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.320 (100)
1.916 (80)
2.168 (70)
2.567 (65)
1.657 (65)
1.483 (50)
1.435 (50)
Comments:
From Mt. Ste. Hilaire

Type Occurrence of GenthelviteHide

Place of Conservation of Type Material:
Pennsylvania State University, University Park, Pennsylvania; National Museum of Natural History, Washington, D.C., USA, #127180; The Natural History Museum, London, England, #1976,427
Geological Setting of Type Material:
Found in granite and syenite pegmatites

Other Language Names for GenthelviteHide

Relationship of Genthelvite to other SpeciesHide

Member of:
Other Members of this group:
DanaliteBe3Fe2+4(SiO4)3SIso. 4 3m : P4 3n
HelvineBe3Mn2+4(SiO4)3SIso. 4 3m : P4 3n
TugtupiteNa4BeAlSi4O12ClTet. 4 : I4
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
Quartz59 photos of Genthelvite associated with Quartz on mindat.org.
Aegirine32 photos of Genthelvite associated with Aegirine on mindat.org.
Helvine30 photos of Genthelvite associated with Helvine on mindat.org.
Calcite20 photos of Genthelvite associated with Calcite on mindat.org.
Microcline16 photos of Genthelvite associated with Microcline on mindat.org.
Magnetite16 photos of Genthelvite associated with Magnetite on mindat.org.
Catapleiite16 photos of Genthelvite associated with Catapleiite on mindat.org.
Albite15 photos of Genthelvite associated with Albite on mindat.org.
Analcime13 photos of Genthelvite associated with Analcime on mindat.org.
Hematite10 photos of Genthelvite associated with Hematite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.FB.05Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6Trig. 3m : P3 1c
9.FB.05Bystrite(Na,K)7Ca(Al6Si6O24)(S5)ClHex.
9.FB.05Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2OHex. 6 : P63
9.FB.05CancrisiliteNa7(Al5Si7O24)(CO3) · 3H2OHex.
9.FB.05Davyne(Na,K)6Ca2(Al6Si6O24)(Cl2,SO4)2Hex. 6/m : P63/m
9.FB.05Franzinite(Na,K)6Ca2(Al6Si6O24)(SO4)2 · 0.5H2OHex.
9.FB.05Giuseppettite(Na,K,Ca)7-8(Al6Si6O24)(SO4,Cl)1-2Hex.
9.FB.05HydroxycancriniteNa8(Al6Si6O24)(OH)2 · 2H2OHex.
9.FB.05Liottite(Na,K)16Ca8(Al6Si6O24)3(SO4)5Cl4Hex.
9.FB.05MicrosommiteNa4K2Ca2(Al6Si6O24)(SO4)Cl2Hex.
9.FB.05PitiglianoiteNa6K2(Al6Si6O24)(SO4) · 2H2OHex.
9.FB.05Quadridavyne(Na,K)6Ca2(Al6Si6O24)Cl4Hex.
9.FB.05Sacrofanite(Na61K19Ca32)(Si84Al84O336)(SO4)26Cl2F6•2H2OHex.
9.FB.05Tounkite(Na,Ca,K)8(Al6Si6O24)(SO4)2Cl · H2OHex.
9.FB.05Vishnevite(Na,K)8(Al6Si6O24)(SO4,CO3) · 2H2OHex. 6 : P63
9.FB.05Marinellite(Na,K)42Ca6(Al6Si6O24)6(SO4)8Cl2 · 3H2OTrig. 3m : P3 1c
9.FB.05Farneseite(Na,Ca,K)56(Al6Si6O24)7(SO4)12 · 6H2OHex. 6/m : P63/m
9.FB.05Alloriite(Na,Ca,K)26Ca4(Al6Si6O24)4(SO4)6Cl6Trig. 3m : P3 1c
9.FB.05Fantappièite[Na82.5Ca33K16.5](Si99Al99O396)(SO4)33 · 4H2OTrig. 3 : R3
9.FB.05KyanoxaliteNa7(Al6-xSi6+xO24)(C2O4)0.5+x · 5H2O (0 < x < 0.5)Hex. 6 : P63
9.FB.05Balliranoite(Na,K)6Ca2(Si6Al6O24)Cl2(CO3)Hex. 6 : P63
9.FB.05CarbobystriteNa8(Al6Si6O24)(CO3) · 3.5H2OTrig. 3m : P3 1c
9.FB.05DepmeieriteNa8(Al6Si6O24)(PO4,CO3)1-x · 3H2O (x<0.5)Hex. 6 : P63
9.FB.05KircheriteNa5Ca2K(Al6Si6O24)(SO4)2 · 0.33H2OTrig. 3 2 : R3 2
9.FB.10BicchuliteCa2(Al2SiO6)(OH)2Iso. 4 3m : I4 3m
9.FB.10DanaliteBe3Fe2+4(SiO4)3SIso. 4 3m : P4 3n
9.FB.10Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)Iso. 4 3m : P4 3n
9.FB.10HelvineBe3Mn2+4(SiO4)3SIso. 4 3m : P4 3n
9.FB.10KamaishiliteCa2(Al2SiO6)(OH)2Tet.
9.FB.10LazuriteNa6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2Iso. 4 3m : P4 3n
9.FB.10NoseanNa8(Al6Si6O24)(SO4) · H2OIso. 4 3m : P4 3n
9.FB.10SodaliteNa8(Al6Si6O24)Cl2Iso. 4 3m : P4 3n
9.FB.10Tsaregorodtsevite(N(CH3)4)(AlSi5O12)Orth.
9.FB.10TugtupiteNa4BeAlSi4O12ClTet. 4 : I4
9.FB.15MarialiteNa4Al3Si9O24ClTet. 4/m : I4/m
9.FB.15MeioniteCa4Al6Si6O24CO3Tet. 4/m : I4/m
9.FB.15Silvialite(Ca,Na)4(Al6Si6O24)(SO4,CO3)Tet. 4/m : I4/m

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

76.2.4.1HelvineBe3Mn2+4(SiO4)3SIso. 4 3m : P4 3n
76.2.4.2DanaliteBe3Fe2+4(SiO4)3SIso. 4 3m : P4 3n

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.9.1LazuriteNa6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2Iso. 4 3m : P4 3n
17.9.2JasmunditeCa11(SiO4)4O2STet. 4 2m : I4m2
17.9.4HelvineBe3Mn2+4(SiO4)3SIso. 4 3m : P4 3n
17.9.5DanaliteBe3Fe2+4(SiO4)3SIso. 4 3m : P4 3n

Fluorescence of GenthelviteHide

Strong green fluorescence in long- and short-wave ultraviolet; short-lived phosphorescence.

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 GenthelviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Genth, F.A. (1892) Contributions to mineralogy; No. 54. American Journal of Science 44, 385.
Glass, J.J., Jahns, R.H. & Stevens, R.E. (1944) Helvite and danalite from New Mexico and the helvite group. American Mineralogist (1944): 29,: 163-191.
DUNN, P.J. (1976): Genthelvite and the helvine group. Mineralogical Magazine 40, 627-636.
DUNN, P. (1977): The helvite group. The Mineralogical Record 8, 92 93.
HASSAN, I. & GRUNDY, H.D. (1985): The crystal structure of helvite group minerals, (Mn,Fe,Zn)8(Be6Si6O24)S2. American Mineralogist, 70, 186-192.
Antaos, S.M. & Hassan, I. (2010) A two-phase intergrowth in genthelvite from Mont Saint-Hilaire, Quebec. Canadian Mineralogist 48, 1217-1223.

Internet Links for GenthelviteHide

Localities for GenthelviteHide

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.
Argentina
 
  • Córdoba
    • Punilla Department
      • Tanti
Dina, H. (1993). Hentschelita en Cerro Blanco, Tanti, Córdoba. Informacion Tecnologica, 48(3-4), 277-282.
Černý, P., Galliski, M. A., Oyarzábal, J. C., Teertstra, D. K., Chapman, R., MacBride, L., & Ferreira, K. (2003). Stranded and equilibrated assemblages of late feldspars in two granitic pegmatites in the Pampean Ranges, Argentina. The Canadian Mineralogist, 41(4), 1013-1026.
Brazil
 
  • Amazonas
    • Presidente Figueiredo
      • Pitinga mine
A. C. Bastos Neto, V. P. Pereira, L. H. Ronchi, E. F. de Lima and J. C. Frantz (2009): The world-class Sn, Nb, Ta, F (Y, REE, Li) deposit and the massive cryolite associated with the albite-enriched facies of the Madeira A-type granite, Pitinga mining district, Amazonas State, Brazil. Canadian Mineralogist 47, 1329-1357.
  • Goiás
    • Cavalcante
      • Vaca Velha
        • Sucuri massif
Raimbault, L. and Bilal, E. (1993) Trace-element contents of helvite-group minerals from metasomatic albitites and hydrothermal veins at Sucuri, Brazil, and Dajishan, China. Canadian Mineralogist, 31, 119-127.
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Horváth, L and Gault, R.A. (1990), The mineralogy of Mont Saint-Hilaire Quebec. Mineralogical Record: 21: 284-359.; Mineralogical Record (2001) 32:248
China
 
  • Heilongjiang Province (Manchuria; Dongbei Region)
    • Qiqihaer Prefecture
      • Greater Hinggan Mts (Greater Khingan Mts)
Xiaoshi Ding, Ge Bai, Zhongxian Yuan, and Luren Sun (1981): Geological Review 46(5), 459-466
  • Inner Mongolia Autonomous Region
    • Tongliao League (Tongliao Prefecture)
      • Jarud Banner (Zalute Co.)
        • Baerzhe complex
Zhongxin Yuan and Ge Bai (1997): Geology and Prospecting 33(1), 42-48
    • Ulanhad League (Chifeng Prefecture)
      • Hexigten Banner (Keshiketeng Co.)
Ottens, B. (2011): Lapis 36(9), 27-33; Ottens, B. and G. Neumeier (2012) The Huanggang Mine, Inner Mongolia, China. Mineralogical Record 43:529-563
  • Yunnan Province
    • Honghe Autonomous Prefecture
      • Gejiu Co.
        • Gejiu Sn-polymetallic ore field
Baogui Zhang, Zhong Zhang, Linbo Yao, Jing Hu, Mingzai Wang, and Sanxue Wang (2002): Geology and Prospecting 38(6), 30-33
Finland
 
  • Southern Finland Region
    • Kotka
Haapala,I: & Ojanperä, P. 1972. Genthelvite-bearing greisens in Southern Finland. Geological Survey of Finland, Bulletin 259. 22s.
    • Kouvola
      • Wyborg batholith
        • Kymi intrusion
Haapala, I., & Lukkari, S. (2005). Petrological and geochemical evolution of the Kymi stock, a topaz granite cupola within the Wiborg rapakivi batholith, Finland. Lithos, 80(1), 347-362.
  • Southwestern Finland Region
Haapala Ilmari 1977 Petrography and geochemistry of the Eurajoki stock, a rapakivi-granite complex with greisen-type mineralization in Southwestern Finland Geological Survey of Finland Bulletin 286; Guidebook, E. (2009). Geological Setting of the Olkiluoto Investigation Site, Eurajoki, SW Finland.
Al-Ani, Thair and Sarapää, Olla 2011.REE Geochemistry and Mineralogy of Tin-bearing Greisens and Wall Rocks in Eurajoki Rapakivi granite, SW Finland.Julkaisusarja: GTK:n arkistoraportit.
      • Väkkärä
Haapala, Ilmari and Ojanperä, Pentti 1972. Genthelvite bearing greisens in Southern Finland. Geological Survey of Finlaand, Bulletin 259
Greenland
 
  • Kujalleq
    • Narsaq
      • Igaliku (Igaliko)
Adrian A. Finch (1990) Genthelvite and Willemite, Zinc Minerals Associated with Alkaline Magmatism from the Motzfeldt Centre, South Greenland. Mineralogical Magazine 54:407-412
Finch, A.A. (1990): Genthelvite and Willemite, Zinc Minerals Associated with Alkaline Magmatism from the Motzfeldt Centre, South Greenland. Mineralogical Magazine. 54: 407-412
Petersen, O.V. (2001): List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin. 190, 25-33
        • Taseq area
Bohse, H., Petersen, O., Niedermayr, G. (2001): Notes on Leucophanite from the Ilimaussaq alkaline complex, South Greenland, Geology of Greenland Survey Bulletin, 190, 119-121
Italy
 
  • Trentino-Alto Adige (Trentino-Südtirol)
    • Bolzano Province (South Tyrol)
      • Vizze Valley (Pfitsch Valley)
        • San Giacomo (Sankt Jakob)
• Gartner, A. & Weiss, S. (2005): Blauer Genthelvin aus Südtirol – ein sensationeller Fund. Lapis, 30(10), 20-23. • Folie, K., Moro, M., Perugini, A., Rocchetti, I. (2004): Genthelvin vom Pfitscher Joch - ein seltenes Vorkommen in den Alpen. Mineralien-Welt, 15(3), 74-75.
Folie, K., Moro, M., Perugini, A., Rocchetti, I. (2004): Genthelvin vom Pfitscher Joch - ein seltenes Vorkommen in den Alpen. Mineralien-Welt, 15, 3, 74-75; Gartner, A., Weiss, S. (2005): Blauer Genthelvin aus Südtirol – ein sensationeller Fund. Lapis, 30, 10, 20-23; Folie, K., Gentile, P., Hanke, M., Rocchetti, I. (2010): Mineralien aus der Umgebung des Pfitscher Jochs in Südtirol (II). Mineralien-Welt, 21, 4, 42-67.
Japan
 
  • Honshu Island
    • Kinki Region
      • Kyoto Prefecture
        • Kameoka City
Tsuruta et al. (2005) Koubutsu-Gakkai Kou'en-Youshi, 146.
Kazakhstan
 
  • Karagandy Province (Qaragandy Oblysy; Karaganda Oblast')
http://geo.web.ru/druza/l-Kent.htm; Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30
Kyrgyzstan
 
  • Talas Oblast
    • Ak-Tyuz ore Field
N. MALYUKOVA , (2014). Zoning of Polymetallic Rare-earth and Rare-metal Deposits in the Ak-Tyuz Ore Field (Northern Tien Shan, Kyrgyzstan). Acta Geologica Sinica (English Edition), 88(supp. 2): 451-453.
Malawi
 
  • Zomba District
Lapis 29(1), 37-38 (2004)
Mongolia
 
  • Hovd Aimag (Khovd Aimag)
    • Altai Mts
P.M. Kartashov analytical data
        • Mount Ulyn Khuren
Kartashov P.M., Voloshin A.V., PakhomovskiiYa.A. On the zonal crystaline gadolinite from the alkaline granite pegmatites of Haldzan Buragtag (Mongolian Altai), - Zapiski VMO, 1993,N3,p. 65-79.
Econ Geol (1995) 90:530-547
Niger
 
  • Agadez Department
    • Aïr Region
      • South Aïr
Wolley, A.R. (2001): Alkaline Rocks and Carbonatites of the World: Africa.- The Geological Society, London
Nigeria
 
  • Plateau State
    • Jos Plateau
      • Younger ring complex
Am. Min. 44, 1294
Norway
 
  • Buskerud
    • Øvre Eiker
      • Gunhildrud
Jahren, J.; Berg, H.J.; Hurum, J.H. & Wulff-Pedersen, E. (1998): Nye undersøkelser av amazonitt-genthelvin pegmatitten fra Fiskum, Øvre Eiker. Bergverksmuseets Skrift 14, 13-16
Neumann, H. (1985): Norges Mineraler. Norges geologiske Undersøkelse Skrifter 68, p.238
  • Nordland
    • Rana
Grauch et al. (1994): Høgtuvaite, a new beryllian member of the aenigmatite group fom Norway, with x-ray data on aenigmatite. Canadian Mineralogist. 32: 439-448.
  • Oppland
    • Lunner
      • Nordmarka
Raade, G. (2005): Gjerdingen-ekeritten, en unik mineralforekomst. Norsk Bergverksmuseum Skrift nr. 30, 2005, p 17.
  • Telemark
    • Porsgrunn
      • Langesundsfjorden
Larsen, A. O. (1988): Helvite group minerals from syenite pegmatites in the Oslo Region, Norway. Contribution to the mineralogy of Norway no 68. Norsk Geologisk Tidsskrift 68: 119-124
  • Vestfold
    • Larvik
      • Hedrum
        • Lågendalen
Oftedal, I. & Sæbø, P.Chr. (1963): Contributions to the mineralogy of Norway No.18. Classification of some Norwegian members of the Helvine group. Norsk Geologisk Tidsskrift 43, 405-409;Larsen, A. O. (1988): Helvite group minerals from syenite pegmatites in the Oslo Region, Norway. Contribution to the mineralogy of Norway no 68. Norsk Geologisk Tidsskrift 68: 119-124
      • Langesundsfjorden
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p ( p.134)
        • Stokkøya (Stokø; Stockö; Stocköe)
Larsen, A. O. (1988): Helvite group minerals from syenite pegmatites in the Oslo Region, Norway. Contribution to the mineralogy of Norway no 68. Norsk Geologisk Tidsskrift 68: 119-124
Pakistan
 
  • Gilgit-Baltistan (Northern Areas)
    • Baltistan
      • Skardu District
Herb Obodda collection MIM Museum collection
  • Khyber Pakhtunkhwa (North-West Frontier Province)
    • Peshawar
      • Hameed Abad Kafoor Dheri
The Mineralogical Record, Volume 35 Number 3, p. 212; http://www.mindat.org/forum.php?read,7,396901,397347#msg-397347
Romania
 
  • Suceava Co.
    • Suceava district
      • Iacobeni (Jakobeny; Jacobeny; Jakabfalva)
http://minerals-of-the-carpathians.eu
Russia
 
  • Eastern-Siberian Region
    • Sakha Republic (Saha Republic; Yakutia)
[World of Stones 12:49]
    • Tuva Republic
      • Sangilen Upland
Kapustin, Y. L., & Bykova, A. V. (1965). First find of hiortdahlite in the USSR. Doklady Akad. Nauk SSSR, 161, 121-124.
  • Northern Region
    • Karelia Republic
      • Ladoga Region
Ivashchenko, V. I., & Lavrov, О. В. (2006) Ore Deposits and Occurrences in the North Ladoga Region, Southwest Karelia. in Ore Deposits And Occurrences In The North Ladoga Region, Southwest Karelia Field Trip Guidebook. Understanding the genesis of ore deposits to meet the demands of the 21st century 12th Quadrennial IAGOD Symposium 2006. Moscow. P.41-64.
    • Murmanskaya Oblast'
      • Keivy Mountains
        • Western Keivy Massif
Pavel M. Kartashov data
      • Lovozero Massif
[World of Stones 95:5-6, p64]
Switzerland
 
  • Wallis (Valais)
    • Binn Valley
      • Chummibort
Cuchet, S., Crumbach, M. and van der Burgt, A. (2014): Das Binntal enthüllt ein grosses Geheimnis. Schweizer Strahler 48 (2), 2-55 (in German and French)
UK
 
  • England
    • Cornwall
      • Liskeard District
        • Altarnun
Kingsbury, A.W.G. (1961) Beryllium Minerals in Cornwall and Devon: Helvine, Genthelvite, and Danalite. Mineralogical Magazine, vol. 32, n° 255, 921-940.; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177 (referring to Kingsbury); Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications (referring to Kingsbury)
  • Scotland
    • Buchan Grampian
      • Cairngorm
[Specimen in the Natural History Museum, London]; Morgan, W.C. (1967) Genthelvite and Bertrandite from the Cairngorm Mountains, Scotland. Mineralogical Magazine, vol. 3, n° 277, 60-63.; Clark, A.M. and Fejer, E.E. (1976) Zoned Genthelvite from the Cairngorm Mountains, Scotland. Mineralogical Magazine, vol. 40, n° 314, 637-639.; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177. (referring to Morgan and Clark)
Ukraine
 
  • Zhytomyr Oblast' (Zhitomir Oblast')
Bailey, J. C: Formation of cryolite and other aluminofluorides: A petrologic review. Bull. geol. Soc. Denmark, vol. 29, pp. 1-45. Copenhagen, June 10th, 1980.; Nechaev, S.V. & Pastukhov, V.G. 2003: Links between the Proterozoic anorthosite-rapakivi granite plutons and ore-forming events in the Ukrainian Shield (ores of titanium, uranium, rare metals and gold). Norges geologiske undersøkelse Special Publication 9, 27-33; Nechaev S & Pastukhov V (2001) Links between the Proterozoic anorthosite-rapakivigranite plutons and ore-forming events in the Ukrainian Shield (ores of titanium, uranium, rare metal and gold). in Abstracts – GEODE field workshop 8-12th July 2001 on ilmenite deposits in the Rogaland anorthosite province, S. Norway.
USA
 
  • Colorado
    • El Paso Co.
      • Cheyenne District (St. Peters Dome District)
Pearl, 1958. Colorado Gem Trails & Mineral Guide
Minerals of Colorado (1997) Eckels, E. B.
Minerals of Colorado (1997) Eckel, E. B.
      • Crystal Park
Minerals of Colorado (1997) Eckels, E. B.
"Minerals of Colorado, updated & revised", p. 14, by Eckel, Edwin B., 1997
Minerals of Colorado (1997) Eckels, E. B.
    • Teller Co.
      • Crystal Peak area
Joseph Dorris (2011) Mineral News, 27, #8, 8.
  • Massachusetts
    • Essex Co.
Dunn, P. (1976): Genthelvite and the helvine group (Mineralogical Magazine 40:627-636).
  • New Hampshire
    • Carroll Co.
      • Albany
        • SSW of Blackberry Crossing
          • Blue Mountain
Rocks & Minerals 80:4 pp242-261
      • Bartlett
Rocks&Min. 76:256
    • Grafton Co.
      • Bethlehem
Rocks & Minerals Vol.65 No.4; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Franklin
Cianciulli, J. (2005): Genthelvite from the Franklin Mine. Mineral News, 21, 10-11
Essene, E.J. & Peacor, D.R.: Petedunnite...: Am. Min.:72:157-166 (1987); Dunn(1995):Pt3:369.
www.franklinmineralmuseum.com
        • Ogdensburg
          • Sterling Hill
Leavens, P. B., Zullo, J., & Verbeek, E. (2009). A complex, genthelvite-bearing skarn from the Passaic pit, Sterling Hill mine, Ogdensburg, New Jersey. Axis, 5, 26.; John Cianciulli, Curator, Franklin Mineral Museum; Mr. Mark Boyer
  • Rhode Island
    • Providence Co.
personal identification
Miller, C. E. (1971) Rhode Island Minerals and their Localities, O. D. Hermes, Ed., University of Rhode Island, Kingston; Rocks & Minerals (1986) 61:264-275
personal identification by Fred Schuster.
Peter Dunn (1976) Genthelvite and the helvine group. Mineralogical Magazine, 4O:627-636
  • Washington
    • Okanogan Co.
      • Golden Horn Batholith
Saul Krotki field trip. Species verified, Cannon Microprobe, EDS spectral analysis, Novermber 2008.; Saul Krotki Collection and data
Zambia
 
  • Lusaka Province
    • Lusaka
Maria Boni, Rosario Terracciano, Giuseppina Balassone, Sarah A. Gleeson und Alexander Matthews (2011): The carbonate-hosted willemite prospects of the Zambezi Metamorphic Belt (Zambia). Mineralium Deposita 46, 707-729.
Maria Boni, Rosario Terracciano, Giuseppina Balassone, Sarah A. Gleeson und Alexander Matthews (2011): The carbonate-hosted willemite prospects of the Zambezi Metamorphic Belt (Zambia). Mineralium Deposita 46, 707-729.
Mineral and/or Locality  
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