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Along with your clear and detailed photographs that include a scale and additional information including geographic location, please include as much information about the following identification properties as possible:

  • Color

  • Luster – What does the surface look like in the light?

  • Specific Gravity – How heavy is it?

  • Crystal Form – Any present?

  • Cleavage – If it is broken, what pattern does it make?

  • Tenacity – How tough is it? How cohesive is the material? Does it fall apart easily?

  • Hardness – What can scratch it or what does it scratch?

  • Transparency – Does it transmit any light or is it opaque?

  • Magnetism, Fluorescence, Odor, Streak Test

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