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Table 2.1 The Mohs Hardness Scale Mineral Assigned Hardness talc 1 gypsum 2 calcite fluorite apatite orthoclase quartz 7 topaz 8. corundum 9. diamond 10 For comparison, the approximate hardnesses of some common objects, measured on the same scale, are: fingernail, 22; copper penny, 3, glass, 5 to 6, pocketknife blade, 5 to 6. These materials can be used to estimate an unknown mineral's hardness when samples of these reference minerals are not available. According to this table,

Table 2.1 The Mohs Hardness Scale Mineral Assigned Hardness talc 1 gypsum 2 calcite fluorite apatite orthoclase quartz 7 topaz 8. corundum 9. diamond 10 For comparison, the approximate hardnesses of some common objects, measured on the same scale, are: fingernail, 22; copper penny, 3, glass, 5 to 6, pocketknife blade, 5 to 6. These materials can be used to estimate an unknown mineral's hardness when samples of these reference minerals are not available. According to this table,

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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Table 2.1 The Mohs Hardness Scale Mineral Assigned Hardness talc 1 gypsum 2 calcite fluorite apatite orthoclase 6. quartz 7 topaz 8. corundum 6. diamond 10 For comparison, the approximate hardnesses of some common objects, measured on the same scale, are: fingernail, 22; copper penny, 3, glass, 5 to 6; pocketknife blade, 5 to 6. These materials can be used to estimate an unknown mineral's hardness when samples of these reference minerals are not available. According to this table, M 3. 4 5
Transcribed Image Text:Table 2.1 The Mohs Hardness Scale Mineral Assigned Hardness talc 1 gypsum 2 calcite fluorite apatite orthoclase 6. quartz 7 topaz 8. corundum 6. diamond 10 For comparison, the approximate hardnesses of some common objects, measured on the same scale, are: fingernail, 22; copper penny, 3, glass, 5 to 6; pocketknife blade, 5 to 6. These materials can be used to estimate an unknown mineral's hardness when samples of these reference minerals are not available. According to this table, M 3. 4 5
quartz 7 topaz 8. corundum diamond 10 For comparison, the approximate hardnesses of some common objects, measured on the same scale, are: fingernail, 2½; copper penny, 3; glass, 5 to 6; pocketknife blade, 5 to 6. These materials can be used to estimate an unknown mineral's hardness when samples of these reference minerals are not available. According to this table, quartz can come in 4 different colors. there are 10 minerals in the Mohs Hardness Scale. physical properties of a mineral come from its composition and crystal structure. tourmaline can be different colors in the same crystal. 9.
Transcribed Image Text:quartz 7 topaz 8. corundum diamond 10 For comparison, the approximate hardnesses of some common objects, measured on the same scale, are: fingernail, 2½; copper penny, 3; glass, 5 to 6; pocketknife blade, 5 to 6. These materials can be used to estimate an unknown mineral's hardness when samples of these reference minerals are not available. According to this table, quartz can come in 4 different colors. there are 10 minerals in the Mohs Hardness Scale. physical properties of a mineral come from its composition and crystal structure. tourmaline can be different colors in the same crystal. 9.
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