Using the flow chart in Figure 6, identify Minerals A, B, C, D, E and F in Box 2. Record your results in the table below. (NOTE: The flow chart shown in Figure 6 was designed to allow you to distinguish nine particular minerals from each other. To identify other minerals, a different set of testing criteria may be necessary.) UNKNOWN SPECIMEN A B C D E F MINERAL

Applications and Investigations in Earth Science (9th Edition)
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Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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Chapter1: The Study Of Minerals
Section: Chapter Questions
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Using the flow chart in Figure 6, identify Minerals A, B, C, D, E, and F in Box 2. Record your results in the table below. (NOTE: The flow chart shown in Figure 6 was designed to allow you to distinguish nine particular minerals from each other. To identify other minerals, a different set of testing criteria may be necessary.)

| UNKNOWN SPECIMEN | MINERAL |
|------------------|---------|
| A                |         |
| B                |         |
| C                |         |
| D                |         |
| E                |         |
| F                |         |
Transcribed Image Text:Using the flow chart in Figure 6, identify Minerals A, B, C, D, E, and F in Box 2. Record your results in the table below. (NOTE: The flow chart shown in Figure 6 was designed to allow you to distinguish nine particular minerals from each other. To identify other minerals, a different set of testing criteria may be necessary.) | UNKNOWN SPECIMEN | MINERAL | |------------------|---------| | A | | | B | | | C | | | D | | | E | | | F | |
**Mineral Identification**

Now that you have had experience with mineral properties such as color, streak, hardness, and cleavage/fracture, your knowledge may be used to identify unknown minerals in a systematic way. The process of mineral identification can be made more efficient by using a "Flow Chart," such as that diagrammed in Figure 6. A mineral identification flow chart represents an effective testing strategy to be applied in identifying a mineral specimen. In Figure 6, for example, you can begin with the test (hardness) indicated at the top of the flow chart. Depending on the outcome of this test, follow the appropriate arrows to the next level of testing, and so on, until you arrive at the bottom of the flow chart, where the correct mineral name for the specimen in question is indicated. For example, a hard mineral with fracture and a wine-red color would be garnet.

**FIGURE 6: Flow Chart for mineral identification**

- **Test: HARDNESS**
  - Soft
    - **Test: TRANSPARENCY**
      - Opaque: TALC
      - Transparent
        - **Test: CLEAVAGE FRAGMENTS**
          - Breaks into brittle plates: GYPSUM
          - Peels into flakes that bend: MUSCOVITE
  - Intermediate 
    - **Test: CLEAVAGE**
      - Cubic: HALITE
      - Rhombohedral: CALCITE
  - Hard
    - **Test: CLEAVAGE/FRACTURE**
      - Fracture
        - **Test: COLOR**
          - Wine Red: GARNET*
          - Green: OLIVINE
      - Cleavage: FELDSPAR
      - Colorless: QUARTZ

**NOTE:** Some garnets tend to break along flat, parallel surfaces that resemble cleavage. This tendency is not due to weakness of the forces holding the atoms together. Rather it is the result of stresses imposed on the garnet after the formation of the mineral. Therefore, applying the term cleavage to garnet is, strictly speaking, incorrect. Garnets that have not been stressed display fracture.
Transcribed Image Text:**Mineral Identification** Now that you have had experience with mineral properties such as color, streak, hardness, and cleavage/fracture, your knowledge may be used to identify unknown minerals in a systematic way. The process of mineral identification can be made more efficient by using a "Flow Chart," such as that diagrammed in Figure 6. A mineral identification flow chart represents an effective testing strategy to be applied in identifying a mineral specimen. In Figure 6, for example, you can begin with the test (hardness) indicated at the top of the flow chart. Depending on the outcome of this test, follow the appropriate arrows to the next level of testing, and so on, until you arrive at the bottom of the flow chart, where the correct mineral name for the specimen in question is indicated. For example, a hard mineral with fracture and a wine-red color would be garnet. **FIGURE 6: Flow Chart for mineral identification** - **Test: HARDNESS** - Soft - **Test: TRANSPARENCY** - Opaque: TALC - Transparent - **Test: CLEAVAGE FRAGMENTS** - Breaks into brittle plates: GYPSUM - Peels into flakes that bend: MUSCOVITE - Intermediate - **Test: CLEAVAGE** - Cubic: HALITE - Rhombohedral: CALCITE - Hard - **Test: CLEAVAGE/FRACTURE** - Fracture - **Test: COLOR** - Wine Red: GARNET* - Green: OLIVINE - Cleavage: FELDSPAR - Colorless: QUARTZ **NOTE:** Some garnets tend to break along flat, parallel surfaces that resemble cleavage. This tendency is not due to weakness of the forces holding the atoms together. Rather it is the result of stresses imposed on the garnet after the formation of the mineral. Therefore, applying the term cleavage to garnet is, strictly speaking, incorrect. Garnets that have not been stressed display fracture.
Expert Solution
Step 1
UNKNOWN SPECIMEN MINERAL
A Muscovite( as it is soft, slightly transparent and peels into flakes)
B Quartz (as it is hard, posseses fractures and is colourless)
C Talc ( as it is soft and opaque)
D Calcite ( as the hardness is intermediate and the cleavage is rhombohedral)
E Feldspar (as it is hard and has prominent cleavage)
F Olivine (as it is hard, has fracture and the test colour is green)
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