Lab 2 Activity
Overview
For Lab 2, you will continue to work through the 22 mineral samples. As a reminder, the samples include the following minerals:
| Amphibole | Galena | Muscovite | Quartz (Milky) |
| Apatite | Graphite | Olivine | Quartz (Rock Crystal) |
| Biotite | Gypsum | Plagioclase feldspar | Quartz (Rose) |
| Calcite | Halite | Potassium feldspar | Sphalerite |
| Chalcopyrite | Hematite | Pyrite | |
| Fluorite | Magnetite | Pyroxene |
Samples to Use for Lab 2
Collect the following mineral samples:
| MI-04b | MI-08 | MI-19 | MI-25 |
| MI-04c | MI-12 | MI-20 | MI-27 |
| MI-05 | MI-14 | MI-22 |
Clues
- Two of the samples will display excellent cleavage in at least one direction.
- Five of the samples have a metallic or submetallic lustre.
What to Do Next
Use the Lab 2 worksheet (Figure 1.21) to record your observations and guide you through the identification process for each mineralt. Refer to Tables 1.2 to 1.4, and/or the Mineral ID Decision Tool in the Reference Tools for Minerals section of this lab manual to help you match your observations with a name.