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When a mineral is broken and has at least one smooth surface, it is said to have

__________________ is a mineral property defined by the density of the mineral sample divided by the density of water (1.0 g/cm3).

What do behavioral geneticists study?

Asbestos, quartz, and feldspar can all pose a danger to humans if they are in a form that can be

Quartz can scratch a steel file. This observation refers to the mineral’s

What causes the most common chromosomal abnormality, called Trisomy 21?

Which of these features is a required characteristic of minerals?

This question is worth 3 multiple choice questions and contains two parts (partial credit possible).  In complete sentences answer: Part 1: What is weathering? Part 2: Explain the difference between chemical and physical weathering.  

Two minerals—alabandite and pyrolusite—are both black, but alabandite is green in its powdered form, whereas pyrolusite is black in its powdered form. A geologist would say that they differ in

Minerals are grouped into classes primarily on the basis of