矿物勘探的核心扫描
元素和矿物扫描
核心扫描
Exploration drilling turns the unknown into the known. This “core” activity is perhaps one of the most valuable assets in the mineral exploration workflow. Core extracted during diamond drilling is typically described by skilled geologists and along with geotechnical characterization is subjected to additional geochemical and mineral analysis.
布鲁克is pioneering new technologies and methods to extract more useful and scalable information from core, aiding geologists on the ground and in the exploration office. As a critical link to the subsurface, core analysis is the best opportunity to characterize the products of mineralization and alteration, from the ore body scale to the sub-grain scale, allowing development of refined ore system process models. Non-destructive and minimally destructive tools can characterize elemental concentration, mineralogy, and texture to construct 3D subsurface deposit models and constrain predictive exploration strategies.
Non-destructive Continuous Core Analysis for Minerals and Elements
核心的非破坏性元素和矿物记录提供了客观的高分辨率分析数据，以识别甜点，矿化和改变。Bruker Portable和手持分析仪用于在田间或核心棚屋中收集深度注册的地球化学和矿物学数据。该数据的高分辨率性质意味着，即使在不稀释的情况下也可以鉴定出矿化或改变的较小前瞻性区域，从而改善对矿石系统的远端识别。数据的现场收集提供了近乎传闻的地球化学，可用于以下方式：
- 客观和快速识别矿物质和矿物关联
- 确定主要目标和指标元素的趋势
- Delineating target zones based on mineralization or alteration
- Geochemical referencing of core improving correlation to other holes
- Real-time directing of drilling programs, optimizing drill hole placement and reducing the number of holes required to find and fully characterize a deposit
- High-resolution preliminary grade identification, reducing the number of barren of samples sent to the assay lab
Quick-look Spatial Geochemistry
Micro-XRF映射，用于快速外观的视觉元素和矿物芯的矿物映射
空间分布的可视化, minor and trace elements in core feeds an understanding of the processes of mineralization and alteration. Micro-XRF provides large-sample geochemical mapping at resolutions less than <20µm that can contextualize features within a geologic process framework. The addition of automated mineralogy to micro-XRF is an emerging field that promises to add the new dimension of rapid and repeatable petrologic characterization. For core analysis Bruker’sM4龙卷风series of instruments can be set for rapid data collection on-site or in the core shack:
- Rapid-scanning of sample material of minimally prepared surfaces, no need for sample coating or polishing
- Enables a data-based approach to selecting sampling locations for methods requiring more costly sample preparation
- 快速评估矿化和改变，以限制概念探索模型的近乎真实的时间迭代
- 通过在可比尺度上测量元素浓度，向高光谱技术提供“地面真相”和互补数据
详细的岩石特征
Mineral and Textural Characterization by Microanalysis and Automated Mineralogy
Many mineralization processes leave a record at the micron scale. Scanning electron microscopy (SEM) characterization is the most accurate method available to visualize and analyze processes at this scale. Bruker’s automated mineralogy and large area elemental mapping solutions by automatededsX-ray mapping with backscatter election (BSE) imaging, provides detailed analysis at resolutions down to ~1 µm. Click here to learn more about rock characterization for exploration with microanalysis.
3D Structure
Three-dimensional Mineral Relationships with High-Resolution 3D X-ray Microscopy
Traditional mineral analysis of rocks views a 3D world in 2D. Analysis of thin sections and core slabs in optical microscopes, SEMs and micro-XRF all require extrapolation from a single plane to understand a 3D object. High-resolution 3D X-ray Microscopy studies on core allow for non-destructive observations of the third dimension. Bruker’sSKYSCAN seriesX射线显微镜的作品可与其他方法合作，以产生有关地质特征的形状，大小和相互关系的详细信息。当与SEM或Micro-XRF的自动矿物学结合使用时，可能性将开放以在微米级上开发全面的矿石分布模型，更好地定义矿化过程，并预测粉刺和其他处理行为。
