lab 1.doc - LAB 1 – GLG 103 MINERALS WORKSHEET Name Fill out the table with the physical properties and identity of each unknown mineral Sample 1 2 3

lab 1.doc - LAB 1 – GLG 103 MINERALS WORKSHEET Name Fill...

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LAB 1 – GLG 103 MINERALS WORKSHEET Name: __ ___ Fill out the table with the physical properties and identity of each unknown mineral. Sample # Color Luster (Metallic Or Non-) Streak Color Hardness Cleavage (Yes/No) Other Mineral Name 1 Yellow Metallic golden Harder than glass No Pyrite 2 Yellow Metallic silver N/A Yes cubic Galena 3 Blue Non- Metallic Dark Harder Than glass No Ball-like crystals Garnet 4 Blue Non- Metallic Dark red brown softer yes Biotite 5 Blue Non- Metallic dark harder yes 2 directions to 90 deg Augite 6 pink Non Metallic light harder yes striations Plagioclase 7 pink Non Metallic light harder no Yellow Brown streak limonite 8 pink Non Metallic light softer yes cubic halite 9 pink Non metallic light softer no green malachite 10 pink Non metallic light softer no blue azurite
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CORRECTIONS 1 hardness less than 2.5 - mineral name = barite This sample is not gold in color. 2 hardness=harder than penny and softer than nail and it fizzed in acid mineral name=
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Unformatted text preview: calcite This sample is not silver in color. 3 color = gold hardness = between 2.5 and 5.5 (softer than glass so not pyrite) chalcopyrite 4 harder than glass so not calcite also does not fizz in acid mineral name= quartz 5 luster = metallic excellent three directions of cleavage - biotite only has one galena 6 galena has three directions of cleavage this mineral does not have cleavage it is hematite 8 This mineral is softer than glass and excellent one direction of cleavage with elastic flakes so it is muscovite . You started off with metallic luster which put you into the wrong area on the flow chart. 9 This sample has cleavage = orthoclase...
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