Rock Density

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Exploration Technique: Rock Density

Exploration Technique Information
Exploration Group: Lab Analysis Techniques
Exploration Sub Group: Rock Lab Analysis
Parent Exploration Technique: Rock Lab Analysis
Information Provided by Technique
Lithology: Density of different lithologic units.
Stratigraphic/Structural:
Hydrological:
Thermal:
Cost Information
Low-End Estimate (USD): 10.001,000 centUSD
0.01 kUSD
1.0e-5 MUSD
1.0e-8 TUSD
/ sample
Median Estimate (USD): 30.003,000 centUSD
0.03 kUSD
3.0e-5 MUSD
3.0e-8 TUSD
/ sample
High-End Estimate (USD): 50.005,000 centUSD
0.05 kUSD
5.0e-5 MUSD
5.0e-8 TUSD
/ sample
Time Required
Low-End Estimate: 1 days0.00274 years
24 hours
0.143 weeks
0.0329 months
/ job
Median Estimate: 10 days0.0274 years
240 hours
1.429 weeks
0.329 months
/ job
High-End Estimate: 21 days0.0575 years
504 hours
3 weeks
0.69 months
/ job
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Rock Density:
Density is defined as the mass of a substance per unit volume, and is highly variable in crustal rocks. Rock density is a physical characteristic that is governed by the chemical composition (in situ minerals) and pore spaces of a specific rock or rock type.
Other definitions:Wikipedia Reegle


 
Introduction
Rock density is not extremely useful for geothermal exploration. However, it is an important characteristic of rocks that allows other useful exploration techniques to be utilized. Gravity, for example, is a function of mass, so gravity surveys are conducted and anomalies identified based on varying rock densities. Rock density can change due to hydrothermal alteration, by minerals being leached or precipitated from hydrothermal fluids moving through a rock mass.







 
Potential Pitfalls
Rock densities are not static properties and can be changed by hydrothermal alteration.





 
References




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