Rock Density

Exploration Technique: Rock Density

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Activities (2)
Areas (2)
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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:
Stratigraphic/Structural:
Hydrological:
Thermal:
Cost Information
Low-End Estimate (USD):	10.0010 TUSD 10 MUSD 10 kUSD 1,000 centUSD / sample
Median Estimate (USD):	30.0030 TUSD 30 MUSD 30 kUSD 3,000 centUSD / sample
High-End Estimate (USD):	50.0050 TUSD 50 MUSD 50 kUSD 5,000 centUSD / 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

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.

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Reference Material

Rock Density At Alum Area (DOE GTP)

Alum Geothermal Area