A dull yet slightly reflective luster. Example, graphite from our lab!

Why is streak more reliable than color in identifying a mineral?

What do we call the porcelain plate we use to perform a streak test?

What are some everyday objects geologists use to test for the hardness of a mineral?

The color of a mineral in powdered form.

The way in which a mineral reflects light.

This means non-living or comes from non-living things.

This means is forms in nature; not man-made

This means it has a definite shape and volume.

The ratio of a mineral's mass to it's volume is known as ______________.

A measure of a mineral's ability to resist scratching.

This mineral is an example of cleavage.

This mineral is an example of fracture.

The breaking of a mineral evenly, along smooth, flat surfaces; a clean break.

The breaking of a mineral and it's rough and jagged; uneven; curved or irregular surfaces.

What you view on the outside of a mineral. For example, sulphur is yellow.

Travis took a piece of hematite and rubbed it across a porcelain plate. The mineral left behind a red-brown powder. What property was he testing?

Lisa noticed the piece of olivine was very dull and non-reflective. What type of luster is she describing?

Sheri was able to scratch the piece of talc with her fingernail. What rating would you give talk on the Mohs Hardness Scale?

Rory placed a little bit of a weak acid on a piece of calcite and noticed it bubbling and fizzing. What special property is she testing?

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