minerals found in the earth’s

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Presentation transcript:

minerals found in the earth’s FELDSPAR One of the most common minerals found in the earth’s crust Mineral: #1 Color: Pink Streak: White Luster: Nonmetallic Mineral Shows: Cleavage Hardness: 6.0 on Mohs Hardness Scale

GALENA Lead Ore – very heavy for its size Mineral: #2 Color: Silver-gray Streak: Dark grey Luster: Metallic Mineral Shows: Cubic cleavage Hardness: Less than 2.5

CALCITE Has double image & fizzes when HCL is placed on it Mineral : #3 Color: White to transparent Streak: White Luster: Nonmetallic Mineral Shows: Good Cleavage Hardness: 3 on Mohs Hardness Scale

FLUORITE Used in toothpaste Mineral: #4 Color: Purple, Green, Colorless Streak: White Luster: Nonmetallic Mineral Shows: Cleavage Hardness: 4 on Mohs Hardness Scale

GRAPHITE Used in Pencils Mineral: #5 Color: Gray/Silver Streak: Dark Gray Luster: Metallic Mineral Shows: Cleavage Hardness: Less than 2.5

SPECULAR HEMATITE Iron Ore Mineral: #6 Color: Shiny silver Streak: Reddish Brown Luster: Metallic Mineral Shows: Fracture Hardness: 2.5-5.5

ALABASTER GYPSUM Used in making drywall Mineral: #7 Color: White Streak: White Luster: Nonmetallic (pearly) Mineral Shows: Cleavage Hardness: 2 on Mohs Hardness Scale

MAGNETITE Strongly magnetic Mineral: #8 Color: Black Streak: Black/green Luster: Metallic Mineral Shows: Fracture Hardness: More than 5.5

MUSCOVITE MICA Used in Kitchen Countertops Mineral: #9 Color: Light yellow/gold to transparent Streak: White Luster: Nonmetallic (glassy) Mineral Shows: Good Cleavage Hardness: Less than 2.5

SULFUR Smells like rotten eggs and used in matches Mineral: #10 Color: Yellow Streak: Yellow to white Luster: Nonmetallic (dull) Mineral Shows: Fracture Hardness: 2.5 to 5.5

TALC Used in Powders Mineral: #11 Color: Gray/white/dark green Streak: White Luster: Nonmetallic (pearly) Mineral Shows: Fracture Hardness: 1 on Moh’s Scale

HALITE Table Salt Mineral: #12 Color: Colorless to white Streak: White Luster: Nonmetallic (glassy) Mineral Shows: Cubic Cleavage Hardness: 2.5-5.5

QUARTZ One of the most common minerals in the earth’s crust and used in making glass Mineral: #13 Color: Pink Streak: None, harder than the streak plate Luster: Nonmetallic (glassy) Mineral Shows: Fracture (conchoidal) Hardness: 7 on Mohs Scale

RED HEMATITE Iron Ore Mineral: #14 Color: Reddish/brown/black Streak: Reddish brown Luster: Nonmetallic (earthy) Mineral Shows: Fracture Hardness: 2.5 to 5.5

BIOTITE MICA Used in kitchen countertops Mineral: #15 Color: Brownish/black Streak: Grey Luster: Nonmetallic (pearly) Mineral Shows: Good cleavage Hardness: Less than 2.5

SELENITE GYPSUM Used to make drywall Mineral: #16 Color: White-Light pink to transparent Streak: White Luster: Nonmetallic Mineral Shows: Cleavage Hardness: 2 on Mohs Scale