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Journal Article

Mineralogy and genesis of the Ni–Co lateritic regolith deposit of the Çaldağ area (Manisa, western Anatolia), Turkey

Cahit Helvacı, Tolga Oyman, İbrahim Gündoğan, Hasan Sözbilir, Osman Parlak, Selahattin Kadir, Necip Güven
Published: 30 November 2017
Canadian Journal of Earth Sciences (2018) 55 (3): 252–271.
DOI: https://doi.org/10.1139/cjes-2017-0184
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Journal Article

Origin and Distribution of Evaporite Borates: The Primary Economic Sources of Boron

Cahit Helvacı, Martin R. Palmer
Journal: Elements
Published: 01 August 2017
Elements (2017) 13 (4): 249–254.
DOI: https://doi.org/10.2138/gselements.13.4.249
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Sulfate–Borate Association (Glauberite–Probertite) In the Emet Basin: Implications For Evaporite Sedimentology (Middle Miocene, Turkey)

Federico Ortí, Laura Rosell, Javier García-Veigas, Cahít Helvaci
Published: 01 May 2016
Journal of Sedimentary Research (2016) 86 (5): 448–475.
DOI: https://doi.org/10.2110/jsr.2016.32
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Fontarnauite, (Na,K) 2 (Sr,Ca)(SO 4 )[B 5 O 8 (OH)](H 2 O) 2 , a New Sulfate-borate Mineral from DoĞanlar (emet), KÜtahya Province, Western Anatolia, Turkey

Mark A. Cooper, Frank C. Hawthorne, Javier GarcÍa-Veigas, Xavier AlcobÉ, Cahit Helvaci, Edward S. Grew, Neil A. Ball
Published: 01 September 2015
The Canadian Mineralogist (2015) 53 (5): 803–820.
DOI: https://doi.org/10.3749/canmin.1400088
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COMPOSITION AND GENESIS OF THE NICKEL-CHROME-BEARING NONTRONITE AND MONTMORILLONITE IN LATERITIZED ULTRAMAFIC ROCKS IN THE MURATDAĞI REGION (UŞAK, WESTERN ANATOLIA), TURKEY

Selahattin Kadir, M. Selman Aydoğan, Ömer Elitok, Cahit Helvaci
Published: 01 June 2015
Clays and Clay Minerals (2015) 63 (3): 163–184.
DOI: https://doi.org/10.1346/CCMN.2015.0630302
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Structural evolution of the Uşak–Güre supra-detachment basin during Miocene extensional denudation in western Turkey

Özgür Karaoğlu, Cahit Helvaci
Published: 01 September 2012
Journal of the Geological Society (2012) 169 (5): 627–642.
DOI: https://doi.org/10.1144/0016-76492011-014
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Journal Article

Skarn Alteration and Au-Cu Mineralization Associated with Tertiary Granitoids in Northwestern Turkey: Evidence from the Evciler Deposit, Kazdağ Massif, Turkey

Yeşim Yücel Öztürk, Cahit Helvaci
Journal: Economic Geology
Published: 01 December 2008
Economic Geology (2008) 103 (8): 1665–1682.
DOI: https://doi.org/10.2113/gsecongeo.103.8.1665
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Journal Article

ZONING IN THE KIRKA BORATE DEPOSIT, WESTERN TURKEY: PRIMARY EVAPORITIC FRACTIONATION OR DIAGENETIC MODIFICATIONS?

Cahit Helvaci, Federico Ortí
Published: 01 August 2004
The Canadian Mineralogist (2004) 42 (4): 1179–1204.
DOI: https://doi.org/10.2113/gscanmin.42.4.1179
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Journal Article

SAPONITE FROM THE EMET COLEMANITE MINES, KÜTAHYA, TURKEY

Mümtaz Çolak, Cahit Helvaci, Marino Maggetti
Published: 01 August 2000
Clays and Clay Minerals (2000) 48 (4): 409–423.
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Journal Article

Sedimentology and diagenesis of Miocene colemanite-ulexite deposits (western Anatolia, Turkey)

Cahit Helvaci, Federico Orti
Published: 01 September 1998
Journal of Sedimentary Research (1998) 68 (5): 1021–1033.
DOI: https://doi.org/10.2110/jsr.68.1021
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Journal Article

Stratigraphy, mineralogy, and genesis of the Bigadic borate deposits, western Turkey

Cahit Helvaci
Journal: Economic Geology
Published: 01 August 1995
Economic Geology (1995) 90 (5): 1237–1260.
DOI: https://doi.org/10.2113/gsecongeo.90.5.1237
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