Geological Sample Density Analysis Using X-Ray Volume Mapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for analyzing drill core samples and drill cuttings in mineral exploration are time-consuming due to the need for laboratory analysis, which can be costly and inefficient.
Innovation Solution
An apparatus that combines X-ray transmission and fluorescence analysis with a weighing unit to determine sample density on-site, using X-ray geological structure data to calculate volume and composition, and integrating a rotating mechanism for tomographic measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If laboratory analysis is used for drill core samples, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The system performs preliminary on-site analysis using portable X-ray fluorescence and transmission equipment before sending samples to the laboratory. This preliminary action includes measuring density, volume, and compositional data in the field, which can then be used for immediate preliminary conclusions while the formal laboratory analysis is still in progress, thereby reducing the effective lead time without sacrificing the precision of the final laboratory results.
Solution Approach 2:
The portable field equipment creates a functional copy of the laboratory analysis system, enabling the same types of measurements (X-ray fluorescence, transmission, density) to be performed in the field. This copying allows the measurement precision typically associated with laboratory equipment to be replicated in mobile units, eliminating the time delay inherent in transporting and waiting for laboratory results.
2Ease of operation
If traditional density measurement methods are used, then ease of operation is improved, but measurement precision deteriorates due to neglect of internal voids
Solution Approach 1:
The system replaces traditional mechanical density measurement methods (such as fluid displacement techniques) with X-ray transmission-based volumetric measurement. This substitution allows the system to see through and map the internal structure of the sample, accurately measuring the volume of solid material while explicitly accounting for internal voids, cavities, and pores. The X-ray transmission method provides precise density calculations by measuring the actual mass and the true volumetric content, eliminating the errors inherent in methods that assume solid, void-free samples.
3Measurement precision
If combined X-ray transmission and fluorescence analysis is performed, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system merges X-ray transmission and X-ray fluorescence measurement capabilities into a single integrated portable apparatus. By combining these two analytical techniques in one device, the system can simultaneously obtain compositional information from fluorescence measurements and structural/volumetric information from transmission measurements, thereby improving overall measurement precision while avoiding the need for separate, independent measurement systems that would increase operational complexity.
Solution Approach 2:
The portable analysis system is designed with multi-functionality, enabling it to perform multiple types of geological analysis (fluorescence composition analysis, transmission density measurement, and volumetric characterization) using a single unified platform. This universality allows the same device to handle various sample types and measurement requirements without requiring multiple specialized instruments, thus improving measurement precision while maintaining operational simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables fast and accurate determination of sample density and composition, considering internal structures and elemental distribution, without the need for laboratory analysis.
Implementation Method 1
an X-ray source for generating an X-ray beam irradiating the sample
Implementation Method 2
a fluorescence detector configured to measure fluorescent radiation emanating from the sample when irradiated by the X-ray beam
Implementation Method 3
an X-ray transmission detector for detecting the X-ray beam passing through the sample
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An apparatus (100) for analysing a sample (101) comprising a drill core sample or drill cuttings is provided. The apparatus comprises an X-ray geological structure data unit configured to scan the sample to obtain a data set indicating a volume of the sample, a fluorescence detector (109) configured to measure fluorescent radiation emanating from the sample (101) when irradiated by the X-ray beam, and a weighing unit (105) configured to weigh the sample. The apparatus further comprises a processing unit (104) configured to calculate a density of the sample (101) based on the data set obtained by the X-ray geological structure data unit, the fluorescent radiation measured by the fluorescence detectors, and the weight provided by the weighing unit.