Ken Spring – Senior Petrologist/Director

Experience 

  • ten years’ experience as a Petrographer, specialising in engineering and construction applications with an emphasis on concrete materials, through thin section evaluation using a polarized microscope and national/international standards
  • Acknowledged industry expert by construction and infrastructure industry, and consulted by the industry when major problem/ issues arise
  • Exploration project management experience including managing drill programs, collection and interpretation of geophysical data and development of cross sections of Lithology models in coal, base metals and uranium and tenement review reporting.

Geological consultancy work includes:

Petrographic examination with vol% count of minerals of quarry products (igneous, metamorphic and sedimentary rocks and sands) for various construction applications through thin section evaluation using a polarizing microscope in accordance with international/Australian standards.  Includes comments on suitability for construction uses as well as free silica and asbestiform content.

Petrographic investigations of hardened concrete, asphalt and cement-modified road base to examine defects that impact on durability of these products, such as soundness of aggregate and cement paste, failures, cracking and ASR effects by international standards.

Determination of secondary mineral content (or soft, weak minerals) by detailed counting under a petrological microscopic and visual counts of unsound fragments in an aggregate sample by Australian standards.

Petrographic description of exploration samples (includes a modal% count of minerals) with interpretation of petrogenesis and alteration history.

Analysis of frictional ignition potential of sediments in proposed underground coal mines using Ward’s classification.  Involves petrographic identification and categorisation of minerals into grouping largely based on hardness of minerals plotted onto a ternary diagram.

Plotting and interpretation of XRD, XRF, SEM and elemental analyses results for both engineering and exploration purposes.

Quarry assessments and registration, covering  geological setting, product assessment, quality management and material systems and development and production.

Education

  • Bachelor of Science Hons (Geology) James Cook University
    Double major in Geology – Awarded  1975
  • Bachelor of Science Hons (Geology) James Cook University
    Thesis: The geology of the Gray Creek Area, North Queensland
    Awarded 1979
  • Master of Applied Science QUT
    Thesis:  Groundwater flow model for a large sand mass with heterogeneous media, Bribie Island, Southeast Queensland
    Awarded 2005

 

Heather Spring –  Petrologist/Director

Experience 

  • ten years’ experience as a Petrographer, specialising in engineering and construction applications with an emphasis on sand products, through thin section evaluation using a polarized microscope and national/international standards,
  • Specialising in heavy mineral grain identifications using petrographic techniques and shape analysis
  • Exploration project management experience including managing drill programs, collection and interpretation of geophysical data and development of cross sections of Lithology models in coal base metal sectors.

Geology consultancy work includes:

Petrographic examination with vol% count of minerals of quarry products for various construction applications through thin section evaluation using a polarizing microscope in accordance with international/Australian standards.  Includes comments on suitability for construction uses as well as free silica and asbestiform content.

Determination of roundness and sphericity of sand, aggregate or crusher dust to accord with the recommended practices of Section 5 of the American Petroleum Institute – API19C.

Initial frac sand potential assessments

Heavy mineral identification and counting.

Education

  • Bachelor of Science (Geology) James Cook University
    Awarded 1982

 

Thomas Spring – Petrologist/Director

Experience 

  • 5 years’ experience working as a Petrographer, specialising in engineering and construction applications with an emphasis on concrete materials, through thin section evaluation using a polarized microscope and national/international standards
  • 2 years’ research in to petrogenisis of Archean greenstone belts in the Pilbara WA, based on geochemical (XRF, Microprobe, ICPMS) and petrographic analysis.
  • Extensive field experience in a range of geological environments, including Pilbara W.A, Flinders Rangers S.A and Sydney Basin N.S.W.

Geological consultancy work includes:

Petrographic examination with vol% count of minerals of quarry products (igneous, metamorphic and sedimentary rocks and sands) for various construction applications through thin section evaluation using a polarizing microscope in accordance with international/Australian standards.  Includes comments on suitability for construction uses as well as free silica and asbestiform content.

Determination of secondary mineral content (or soft, weak minerals) by detailed counting under a petrological microscopic and visual counts of unsound fragments in an aggregate sample by Australian standards.

Petrographic description of exploration samples (includes a modal% count of minerals) with interpretation of petrogenesis and alteration history.

Analysis of frictional ignition potential of sediments in proposed underground coal mines using Ward’s classification.  Involves petrographic identification and categorisation of minerals into grouping largely based on hardness of minerals plotted onto a ternary diagram.

Quarry assessments and registration, covering  geological setting, product assessment, quality management and material systems and development and production.

Education

  • Bachelor of Applies Science with Distinction (Geology) QUT
    Awarded 2013
  • Master of Applied Science QUT
    Thesis:  Reconstruction of the physical volcanological processes and petriogenesis of the 3.5GA Warrawoona Group pillow basalt of the Warralong Greenstone Belt, Pilbara Craton WA – Submitted 2016