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Minerals: Exploration and Discovery

Pathfinder & Indicator Minerals in Exploration

Pathfinder and indicator minerals provide a robust and cost effective means to evaluate large areas for their mineral potential. Bruker is actively working with industry leaders to develop new approaches for analysis that allow improved mineral identification and compositional characterization workflows.

Introduction

Indicator Minerals

With the costs of mineral exploration ever increasing so do needs for robust approaches to evaluating regional prospectivity and improved target refinement. Pathfinder and indicator minerals provide a means to evaluate large areas for their mineral potential and eliminate likely barren areas from consideration before expending further on drilling.

Bruker is actively working with industry leaders to develop new approaches for analysis that allow improved mineral identification and compositional characterization workflows. Understanding that accurate data allows upscaling to metallogeny models at the district-scale and beyond, Bruker is committed to building instrumentation and software that produces the right data outputs for any program. Bruker systems allow any company to eliminate impediments presented by a lack of analytical expertise, with solutions designed for in-house laboratories and regional exploration offices. Bruker’s worldwide geology team can help find the appropriate solution for all regional exploration needs.

RIMS for Regional Exploration

Resistant Mineral Indicators of Regional Prospectivity and Fertility

Magmatic and hydrothermal minerals that are resistant to weathering and so end up in soil, till or stream sediments are increasingly targeted in mineral exploration as tests for overall district or regional prospectivity or vectors to mineralization. Key trace element contents of dateable minerals such as zircon, apatite, titanite and rutile provide windows into source magma chemistry, including crystallization temperatures, degree of fractionation, water content, and oxidation state, with geochemical data that ties directly to the age of sources rocks and their associated magmatic events.  Resistant minerals formed during mineralizing events provide direct evidence for the exposure of hydrothermally altered zones within a water shed or upstream of glacial deposits, with their chemistries pointing toward mineralized versus barren environments or even discriminating between deposit types.

Bruker provides solutions to the different analytical needs of resistant indicator mineral (RIMS) exploration programs:

  • M4 TORNADO and M4 TORNADO PLUS micro-XRF provides rapid scanning of minimally prepared samples to provide spatially located geochemical data. Scan unpolished or coated scatter mounts of loose sediment or soil samples, crushed or intact rock, using geochemical proxies to identify minerals or integrate maps to calculate bulk compositions.
  • AMICS Automated Mineralogy for M4 TORNADO micro-XRF and Scanning Electron Microscope allows two levels of mineralogical identification and characterization. M4 TORNADO AMICS provides rapid scanning and evaluation of loose samples without the need for polishing or conductive coating, providing first order data to be fed back into decision making, and screening for further analysis. AMICS for SEM is a more traditional automated mineralogy approach working with polished samples, but with advanced data collection and reduction capabilities of Bruker's AMICS software. AMICS for SEM and M4 TORNADO are fully compatible allow both solutions to work in tandem.

Distal Alteration Footprints

Mineral Indicators of Distal Alteration Footprints

Alteration vectoring and fertility screening represent early-stage exploration techniques that have application where exposures are limited or where exploration is dealing with partial or extensive cover. Designed to access low-level geochemical anomalies preserved in alteration minerals, the technique aims to detect alteration even at significant distance from a mineralized center, to vector toward and assess distance to the target, and evaluate potential fertility or endowment. Common target minerals include epidote and chlorite in the "greenrock" environment, alunite or clay minerals to aid vectoring in lithocap environments, or white micas, which may occur in the distal reaches of alteration zones but give clues to deposit type, alteration zone, proximity, and fertility.

Bruker analytical solutions allow our customers to focus on their exploration needs and refine their targeting and vectoring strategies.

  • M4 TORNADO and M4 TORNADO PLUS micro-XRF provides rapid scanning of drill core, RC chips and sediment samples to generate geochemical maps and identify alteration minerals. Integrate area scans to calculate accurate bulk compositions, or from sub-domains selected from within maps to compare compositions in heterogeneously altered rocks. Data exports can be integrated with existing geochemical modeling programs for calculation of alteration indices or construction of 3-D models to support robust decision making.
  • AMICS for Scanning Electron Microscope provides the next level of Automated Mineralogy solutions for alteration mineral chemistry and detection of distal footprints. Automated rapid (short count) mineral identification may be supplemented with drive-back long-count quantification for accurate characterization of greenrock and distal footprint indicator minerals

Bulk Samples

Pathfinder Minerals in Bulk Samples

The needs of greenfields exploration commonly requires a rapid, low-cost solution to screen bulk samples. Screening methods that target pathfinder elements as proxies to make decisions in the field, or guide funneling of samples toward the appropriate mineralogical or compositional analysis technique. For rapid screening of bulk samples for the possible presence of pathfinder minerals solutions include:

  • The Titan handheld XRF, built with a ruggedized case and TITAN Detector Shield guaranteed to protect the detector window and optional safety-interlocked benchtop stand, for the most portability and flexibility in analyzing from Mg to U
  • The CTX, a new portable single-sample ruggedized countertop XRF with battery backup for analyzing from Mg to U

Productos relacionados

Products for Pathfinder & Indicator Minerals in Exploration

AMICS Mineral Software

Sistema Automatizado de Mineralogía AMICS para SEM

Escaneo rápido automatizado para la caracterización de minerales y rocas por SEM
CTX Benchtop / Desktop XRF

CTX BenchTop XRF spectrometer.

Portable BenchTop XRF ideal for quick analysis of small or prepared samples: only 14 cm wide, light-weight (<7 kg), safety-interlocked, interactive touchscreen, and battery operated.
D2 PHASER

D2 PHASER

El mejor difractómetro de sobremesa del mundo. XRD para todos XRD para todas partes XRD para todo
High Performance micro-XRF spectrometer with Market-Leading Speed and Flexibility

M4 TORNADO

Micro-XRF de alto rendimiento para punto pequeño (<20 µm spot size) and multi-layer analysis (12 selectable) providing composition and element distribution maps (2D area scans)
Bruker M4 TORNADO AMICS micro-XRF Automate Data Collection and Mineral Matching

M4 TORNADO AMICS

M4 TORNADO AMICS es un nuevo e innovador enfoque de la minerología automatizada que utiliza la excitación de rayos X para recoger espectros de energía para el emparejamiento de minerales.
M4 TORNADO PLUS µ-XRF BRUKER, With its super-light element detectors, the M4 TORNADO PLUS is the first micro-XRF scanner able to measure any element from No. 6 (carbon) upwards

M4 TORNADO PLUS

El revolucionario escáner micro-XRF de elemento superligero
S1 TITAN Handheld XRF analyzer

S1 TITAN Handheld XRF Analyzer

Handheld XRF ideal for taking the lab to the sample for fast analysis of any material: small, light-weight (<1.5 kg with battery), preloaded with point-and-shoot calibrations of choice.
S2 PUMA Series 2

S2 PUMA

Multi-element analysis from Carbon (C) to Americium (Am) for a wide range of applications in at-line quality control or in central labs. With its unique HighSense detectors the S2 PUMA also masters advanced applications in R&D.
XFlash 6/30 EDS detector

QUANTAX EDS para SEM

Los EDS más avanzados para su SEM, FIB y EPMA
Fuente de rayos X de micropunto XTrace

QUANTAX Micro-XRF

Sensibilidad altamente elemental con preparación mínima de muestras