Mineral Identification Lab_Online_Part 2
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School
South Texas College *
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Course
1403
Subject
Geology
Date
Feb 20, 2024
Type
Pages
3
Uploaded by DoctorMetal770
Mineral Identification Lab Part 2 Open your lab manual. The Laboratory about Minerals is from page 63 to page 100. We are going to assume that you have collected physical property data for 17 unknown samples. Now, you have to name or identify the samples. You will be using pages 78 to 85. Page 78 is used for Metallic and Submetallic Mineral Identification. Page 79 is used for Dark to Medium-Colored Nonmetallic Mineral Identification. Page 80 is used for Light-Colored Nonmetallic Mineral Identification. Pages 81 to 85 are the Mineral Database. The Mineral Database contains more detailed descriptions and mineral uses. You must type your answers (Mineral Name) into the Mineral Identification Lab Answer Sheet. Sample # Luster Hardness Cleavage Color Streak Other Properties Mineral Name 1 Nonmetallic Soft 2 cleavages that intersect not 90 degrees White to colorless; less common blue and yellow White Very heavy 2 Metallic Soft 3 cleavages that intersect at or near 90 degrees Silver gray Dark gray 3 Nonmetallic Soft 3 cleavages that intersect not 90 degrees White, cream, pink and gray White Has a weak reaction to with Hydrochloric Acid 4 Nonmetallic Hard 2 cleavages that intersect at or near 90 degrees Dark green to black Light gray 5 Metallic Soft No Cleavage Brown Gray to black Tarnishes to purple or blue 6 Nonmetallic Hard No Cleavage Bluish white to gray, and many other colors None (White) Waxy luster Barite
Galena
Dolomite
Augite
Bornite
Chalcedony
Sample # Luster Hardness Cleavage Color Streak Other Properties Mineral Name 7 Metallic Soft 1 plane Shiny gray Dark gray Very soft 8 Nonmetallic Soft No Cleavage White White 9 Nonmetallic Hard 2 cleavages that intersect at or near 90 degrees Pink, orange, white None (White) 10 Nonmetallic Soft No Cleavage Greens, yellow and blue White 11 Nonmetallic Soft 1 plane Colorless to light smokey brown White Transparent in thin sheets 12 Nonmetallic Hard No Cleavage Pink to red None (White) 13 Metallic Mainly Soft No Cleavage Black, brown, and gray Black to gray Tarnishes to nonmetallic 14 Nonmetallic Soft 4 planes Purple, green, blue, yellow, brown, and gray White 15 Nonmetallic Hard Poor cleavage Brown None (White) Two crystals intersect forming X or + shape Graphite
Gypsum
Potassium
Feldspar
Serpentine
Minerals
Muscovite
Mica
Garnet
Pyrrhotite
Fluorite
Staurolite
Sample # Luster Hardness Cleavage Color Streak Other Properties Mineral Name 16 Nonmetallic Hard 2 cleavages intersect at or near 90 degrees Black White 17 Nonmetallic Hard Poor cleavage Greens to yellow green None (White) Sometimes gemmy Plagioclase
Feldspar
Epidote
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