Department of Geology Faculty of Science Chulalongkorn University 2307-208 Physical Geology Lab Laboratory Exercise 3
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The following questions refer to the study set of mineral available. Note that all the specimens are numbered and that at this stage the answers should be records by number rather than be the name of the mineral.
1. What minerals show metallic luster?
What minerals show glassy luster?
What minerals show dull luster?
What minerals show pearly luster?
2. What minerals are softer than three?
What minerals are softer than six?
What minerals are harder than three?
What minerals are harder than six?
3. What minerals are white?
What minerals are red?
What minerals are yellow?
What minerals are black?
What minerals are brassy colors?
What minerals are green?
What minerals are brown?
What minerals are gray?
What minerals are clear?
4. What minerals have a white streak?
What minerals have a green streak?
What minerals have a red streak?
What minerals have a brown streak?
What minerals have a black streak?
What minerals have a gray streak?
What minerals have a yellow streak?
5. What minerals are typically heavy (Heavier than quartz)?
What minerals are typically light (lighter than quartz)?
6. What minerals have conchoidal fracture?
What minerals have fibrous fracture?
What minerals have uneven fracture?
What minerals have splintery
7. What minerals have planes of cleavage?
What minerals have two planes of cleavage?
What minerals have one planes of cleavage?
What minerals have not apparent cleavage?
8. What minerals are opaque?
What minerals are translucent?
What minerals are transparent?
9. What minerals effervesce with dilute hydrochloric acid?
10. What two properties distinguish quartz from feldspar?
What two properties distinguish quartz from calcium?
What two properties distinguish calcite from selenite gypsum?
What two properties distinguish galena from sphalerite?
11. What property separates orthoclase from plagioclase?
What property separates limonite from hematite?
What property separates biotite from muscovite?
What property separates amphibole from pyroxene?
12. List all of your minerals in order from softest to hardest.
