We provide many different types of petrographic reports these include Standard petrographic reports for engineering Purposes and Exploration and petrogenises

Engineering Application

Standard Petrographic Report on a Single Rock Type

Samples can be submitted as products (Spalls, ballast, aggregate, ect.) or as a source rock. This report provides identification, description of textures and structures, approx. percentage of minerals present (based on a 100 point count), comment on secondary or deleterious minerals, and potential for alkali-aggregate reactivity and suitability for proposed engineering use. (e.g. to take account of ASTM C 295 Standard Guide for Petrographic Assessment of Aggregates for Concrete and AS1141 Standard Guide for the Method for sampling and testing aggregates).

Secondary Mineral Counting – strict application of AS 1141.26 or RCA 373.01 standard based on 600 counts in each of three thin sections.

Standard Petrographic Report on a Sand

The report provides a description of the grain shapes, surface coatings and mineralogical composition, (based on a brief point count),and comments on soundness, durability, potential for deleterious AAR and suitability for proposed uses (to take account of ASTM C 295 Standard Guide for Petrographic Assessment of Aggregates for Concrete and AS1141 Standard Guide for the Method for sampling and testing aggregates). Lists free silica content or total quartz content as defined in Queensland Main Roads Q188

Exploration Application

Brief Exploration Petrographic Report

Samples can be submitted as hand specimen, rock samples, drill chips or drill cores. This report provides identification, formal description of textures, structures and mineralogy, percentage modal estimate and significance (both economical and geological) of the sample in the suite and in relation to requested aspects.

Detailed Exploration Petrographic report

Samples can be submitted as hand specimen, rock samples, drill chips or drill cores. This report provides identification, formal description of textures, structures and mineralogy, percentage modal and interpretation of the petrogenisis including origin, alteration and metamorphic history and significance (both economical and geological) of the sample in the suite and in relation to requested aspects.

Frictional Ignition testing

Sample can be submitted as a hand specimen from mine face or as drill core. This report is based on the frictional ignition testing of a sample using Ward’s classification diagram. This involves petrographic identification and categorisation of minerals into grouping largely based on hardness of minerals plotted onto a ternary diagram.

Shape Analysis (Roundness and Sphericity)

Microscopic analysis of Sand, Aggregate or Crusher Dust to determination of roundness and sphericity to accord with the recommended practices of Section 5 of the American Petroleum Institute – API19C.

Heavy mineral sands – Microscopic identification and grain counting of heavy mineral concentrates.