Mineral Properties Subtitle

Fizzing; reaction with weak acid (HCl)

Fizzing; reaction with weak acid (HCl) At this station… What occurs when the hydrochloric acid fizzes on the mineral? What do you need to test for fizzing? Make and record observations with CALCITE

Magnetism; attracted/repelled by magnets

Magnetism; attracted/repelled by magnets At this station… Predict the cause of magnetism Describe how to determine if a mineral exhibits magnetism Test and record MAGNETITE and HORNBLENDE for magnetism

Fluorescence; glowing under a UV light

Fluorescence; glowing under a UV light At this station… Predict the cause of fluorescence Describe how to determine if a mineral exhibits fluorescence Test and record FLUORITE and CALCITE for fluorescence

Hardness; ability of a mineral to resist being scratched

Hardness; ability of a mineral to resist being scratched At this station… What is the lowest on Moh’s hardness scale? Highest? Describe how to determine hardness of a mineral and what tools you use Test and record hardness of TALC and CORUNDUM

Double Image; occurs when light is bent

Double Image; occurs when light is bent At this station… Sketch the double image you see when you place the minerals on the line below Describe how to determine if a mineral exhibits this property Test and record CALCITE and GYPSUM for double image

Color;

Color; At this station… What factors can change the color of a mineral? Describe how to determine color Test and record AZURITE and MALACHITE for color

Color; Amethyst Milky Quartz Rose Quartz Crystal Quartz Tiger Eye Color can be deceiving! Each of these is Quartz! Amethyst Milky Quartz Rose Quartz Crystal Quartz Tiger Eye Smokey Quartz

Density; mass/volume

Density; mass/volume At this station… What is specific gravity? Describe how to determine density of a mineral? What tools are used? Test and record the density of the mineral and determine what mineral you have.

Smell; scent of a mineral

Smell; scent of a mineral At this station… Predict the cause of a scent Describe how to test for smell Describe and record the smell of SULFUR and PYRITE

Streak; the color of the powder left when a mineral scratches a substance

Streak; the color of the powder left when a mineral scratches a substance At this station… Why is streak more reliable than color? Describe how to test for the streak of a mineral Determine and record the streak for HEMATITE and GYPSUM

Streak; the color of the powder left when a mineral scratches a substance HEMATITE GYPSUM

Luster; the way a mineral reflects light; metallic or nonmetallic

Luster; the way a mineral reflects light; metallic or nonmetallic At this station… What are the 2 main types of luster? Describe how to determine the luster of a mineral Determine and record the luster for GALENA and FELDSPAR

Luster; the way a mineral reflects light GALENA FELDSPAR

Crystal Shape; every mineral has a definite crystalline structure

Crystal Shape; every mineral has a definite crystalline structure At this station… Observe the crystal structures of the minerals where possible

Crystal Shape; every mineral has a definite crystalline structure Quartz Pyrite Calcite Fluorite

Cleavage/Fracture; the way a mineral breaks

Cleavage/Fracture; the way a mineral breaks CALCITE APATITE

Cleavage/Fracture; the way a mineral breaks At this station… Wghat is the difference between cleavage and fracture? (draw a picture if this helps) Describe ow to determine whether a mineral exhibits cleavage or fracture Determine and record whether CALCITE and APATITE exhibit cleavage or fracture

Ores; mineral deposits large enough to be mined for profit

Ores; mineral deposits large enough to be mined for profit At this station… Read page 14-15 of the textbook Determine the difference between surface and subsurface mining; list a pro and a con of each

Mineral Uses

Mineral Uses; At this station… Look at the document Explain a few uses for minerals that are meaningful to you

Calcite Fizzing Talc Hardness Calcite Double Image Corundum Hardness Gypsum Double Image Magnetite Magnetism Fluorite Fluorescence Hornblende Magnetism Calcite Fluorescence

Azurite Color Pyrite Smell Galena Luster Hematite Streak Malachite Color Feldspar Luster Gypsum Streak Apatite C/F Sulfur Smell Calcite C/F