Which term refers to the chemical properties of rock?

Which term refers to the chemical properties of rock?

• A. Geophysical
• B. Geochemical
• C. Mineralogy
• D. Petrology

Answer: (B)

Chemical properties of rock refer to what elements are present, in what amounts, and how those elements participate in chemical reactions within the rock. The field that focuses on these chemical aspects is geochemical. It looks at rock composition, element abundances, chemical weathering, and processes that change rocks through chemistry, such as mineral dissolution or precipitation and isotope patterns. Geophysical, by contrast, deals with physical properties and measurements—things like density, porosity, seismic velocities, and magnetic or gravitational properties that tell us about the rock’s structure rather than its chemical makeup. Mineralogy centers on minerals themselves—their chemical formulas, crystal structures, and how they form and transform. Petrology studies rocks as whole bodies—their origin, history, and classification—often integrating mineralogy with broader geological context. So, when the focus is on the chemical makeup and chemical processes of rocks, geochemical is the best fit.

Chemical properties of rock refer to what elements are present, in what amounts, and how those elements participate in chemical reactions within the rock. The field that focuses on these chemical aspects is geochemical. It looks at rock composition, element abundances, chemical weathering, and processes that change rocks through chemistry, such as mineral dissolution or precipitation and isotope patterns.

Geophysical, by contrast, deals with physical properties and measurements—things like density, porosity, seismic velocities, and magnetic or gravitational properties that tell us about the rock’s structure rather than its chemical makeup.

Mineralogy centers on minerals themselves—their chemical formulas, crystal structures, and how they form and transform.

Petrology studies rocks as whole bodies—their origin, history, and classification—often integrating mineralogy with broader geological context.

So, when the focus is on the chemical makeup and chemical processes of rocks, geochemical is the best fit.