Debra ChappellSenior Laboratory Technician

Department

NZGAL

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Biography

Debra is a Senior Laboratory Technician in the New Zealand Geothermal Analytical Laboratory (NZGAL). Debra is the XRD analyst for GNS Science and does analyses (quantitative, clay separate), interpretations and final GNS Petrology Services report writing on both geological and non-geological samples. She is a specialist in the analysis of anions on ICS5000 Dionex and Metrohm ICs and tracers on the HPLC. Other capabilities include radioactive iodine tracer extraction and analysis on LSC, ICP-MS and ICP-OES elemental analysis as well as elemental mercury in geothermal steams and non-condensable gases analyzed on ICP-OES, Scanning Electron Microscopy, general analytical chemistry, logging in sample submissions from clients, creating invoices and final reports for clients and carrying Month End reconciliations.

Qualifications

BSc(Hons), Geology
PhD, Microbiology

Areas of expertise

Technical: Analysis of Geothermal Water and Gases
Technical: Computer skills
Technical: Data analysis
Technical: Electron Microscopy/ XRD
Technical: Ion Selective Electrode
Technical: Metrohm -Titrino-autotitrators
Technical: Radiation Instrumentation
Technical: Sample preparation
Technical: Training of Laboratory Staff
Technical: X-ray Fluorescence
Technical: X-ray diffraction
Geochemist: Environmental geochemistry
Technical: Flow Injection Hg analysis
Geology: Geochemistry
Geology: Igneous Petrology
Geology: Metamorphic Petrology
Geology: Microbeam analysis
Geology: Mineral and rock indentification
Geology: Mineralogy
Technical: Atomic Absorption Spectrometry
Business Development: Geothermal
Geochemist: Geomicrobiology
Technical: Geochemical analysis of minerals
Technical: ICP-MS trace element analysis
Technical: ICP-OES analysis
Technical: Optimization methods and applications
Technical: Scanning Electron Microscopy
Technical: SEM scanning
Technical: HPLC for geothermal tracers
Public relations: Science communication
Technical: Ion Chromatography
Public relations: Public Relations
Technical: Liquid Scintillation Counting
Public relations: education

Publications

Selection of major publications

Coombs, D.S.; Kawachi, Y.; Miura, H.; Chappell, D.A. 2004. Cerchiaraite and Ca-bearing noélbensonite from Woods mine, New South Wales, Australia, European Journal of Mineralogy 16(1): p. 185-189. p. 185-189
Chappell, D.A.; Craw, D. 2003. Environmental controls on iron-oxidising, sulfur-oxidising and sulfate-reducing bacteria in mine wastes, New Zealand, New Zealand Journal of Marine and Freshwater Research 37(4): p. 767-775. p. 767-775
de Ronde, C.E.J.; Faure, K.; Bray, C.J.; Chappell, D.A.; Wright, I.C. 2003. Hydrothermal fluids associated with seafloor mineralization at two southern Kermadec arc volcanoes, offshore New Zealand, Mineralium Deposita 38(2): p. 217-233. Institute of Geological & Nuclear Sciences contribution 2663 p. 217-233
Reay, A.; Chappell, D.; Garden, B. 2002. A new garnet-bearing mineral breccia from North Otago, New Zealand, New Zealand Journal of Geology and Geophysics 45(4): p. 461-466. p. 461-466
Chappell, D.A.; Craw, D. 2002. Geological analogue for circumneutral pH mine tailings : implications for long-term storage, Macraes Mine, Otago, New Zealand, Applied Geochemistry 17(8): p. 1105-1114. p. 1105-1114
Craw, D.; Chappell, D.; Black, A. 2002. Surface run-off from mineralised road aggregate, Puhipuhi, Northland, New Zealand, New Zealand Journal of Marine and Freshwater Research 36(1): p. 105-116. p. 105-116
Craw, D.; Chappell, D.; Reay, A.; Walls, D. 2000. Mobilisation and attenuation of arsenic around gold mines, east Otago, New Zealand, New Zealand Journal of Geology and Geophysics 43(3): p. 373-383. DOI: 10.1080/00288306.2000.9514894. [s.l.]: [s.n.]. p. 373-383
Craw, D.; Chappell, D.A. 2000. Metal redistribution in historic mine wastes, Coromandel Peninsula, New Zealand, New Zealand Journal of Geology and Geophysics 43(2): p. 187-198. DOI: 10.1080/00288306.2000.9514880. [s.l.]: [s.n.]. p. 187-198
Craw, D.; Chappell, D.; Reay, A. 2000. Environmental mercury and arsenic sources in fossil hydrothermal systems, Northland, New Zealand, Environmental geology 39(8): p. 875-887. [s.l.]: [s.n.]. p. 875-887
Craw, D.; Chappell, D.; Nelson, M.; Walrond, M. 1999. Consolidation and incipient oxidation of alkaline arsenopyrite-bearing mine tailings, Macraes Mine, New Zealand, Applied Geochemistry 14(4): p. 485-498. [s.l.]: [s.n.]. p. 485-498
de Ronde, C.E.J.; Faure, K.; Wright, I.C.; Chappell, D.A. 1997. Base and precious metal mineralization associated with volcanoes of the southern Kermadec Arc, New Zealand, Eos 78(46:supplement): p. F738. [s.l.]: [s.n.]. Institute of Geological & Nuclear Sciences abstract 856 p. F738

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