Contracting - Request For Quotes
Project: Major and trace element geochemical analyses of igneous and sedimentary rock samples.
Scope: The tectonic setting and petrogenetic history of a rock, or suite of rocks, may be interpreted using chemical composition, in addition to field and geological relationships,
but the former requires high-precision analyses of major and trace elements by advanced techniques. We intend to submit approximately 200 samples to a commercial lab for bulk
chemical characterization to support investigations of the petrogenesis of igneous rocks in our project area.
Technical Requirements: Geochemical characterization of rock compositions requires specialized sample preparation by multiple techniques, taking into consideration the variable
properties of different elements. Commercial labs have developed combination techniques to liberate all elements in a rock (e.g., four-acid digestion plus lithium borate fusion), including
the most resistive to standard digestion methods (e.g., high-field strength elements). Un-bonded elements may then be measured using standard analytical techniques, including X-ray
Flourescence (XRF), inductivity coupled plasma mass spectrometry (ICP-MS) and inductivity coupled plasma atomic emission spetroscopy (ICP-AES). Generally, the most widely accepted
method for measuring the major elements (0.01wt.%-100wt.%) is analysis by XRF, whereas the trace elements (0.01 ppm) are most effectively measured by ICP-MS and base metals by
ICP-AES. Volatile contents are also included in standard analytical packages, measured as Loss on Ignition (LOI) at ~1,000°C.
Deliverables: The contractor shall provide deliverables as a report in Excel spreadsheet format. The report shall include quality-assessment,
quality-control analyses of duplicate measurements and standards. The contractor shall return all remaining geological materials,
including sample remnants, chips, and powders.
Period of Performance: 11/01/2016 to 03/31/2017
Vendor must be registered in System for Award Management (SAM) sam.gov
Vendor must invoice through the Invoice Processing Platform (IPP) ipp.gov
Quote Due By: November 01, 2016 NLT 12:00PM AKDST
For all projects, contact: Tyrone Rowse