1-2 Identifying Minerals 1.Classify Minerals using common mineral identification techniques....
-
Upload
howard-oneal -
Category
Documents
-
view
215 -
download
3
Transcript of 1-2 Identifying Minerals 1.Classify Minerals using common mineral identification techniques....
![Page 1: 1-2 Identifying Minerals 1.Classify Minerals using common mineral identification techniques. 2.Explain special properties of minerals.](https://reader035.fdocuments.in/reader035/viewer/2022072013/56649e545503460f94b4a8d6/html5/thumbnails/1.jpg)
1-2 Identifying Minerals
1. Classify Minerals using common mineral identification
techniques.
2. Explain special properties of minerals.
![Page 2: 1-2 Identifying Minerals 1.Classify Minerals using common mineral identification techniques. 2.Explain special properties of minerals.](https://reader035.fdocuments.in/reader035/viewer/2022072013/56649e545503460f94b4a8d6/html5/thumbnails/2.jpg)
Color
• Color is not the best factor to use in identifying a mineral.
• Impurities and weathering cause minerals to come in different colors.
![Page 3: 1-2 Identifying Minerals 1.Classify Minerals using common mineral identification techniques. 2.Explain special properties of minerals.](https://reader035.fdocuments.in/reader035/viewer/2022072013/56649e545503460f94b4a8d6/html5/thumbnails/3.jpg)
Luster – The way lights reflects off a mineral’s surface.
• Metallic – shiny like metal
• Sub-metallic – shiny but not smooth looking.
• Non-metallic – vitreous, silky, resinous, waxy, pearly, and earthy.
![Page 4: 1-2 Identifying Minerals 1.Classify Minerals using common mineral identification techniques. 2.Explain special properties of minerals.](https://reader035.fdocuments.in/reader035/viewer/2022072013/56649e545503460f94b4a8d6/html5/thumbnails/4.jpg)
Streak – the color of a mineral in powdered form.
• Rub a mineral against an unglazed porcelain tile (streak plate)
• Streak color is a more reliable way to use color in identifying a mineral in some cases.
![Page 5: 1-2 Identifying Minerals 1.Classify Minerals using common mineral identification techniques. 2.Explain special properties of minerals.](https://reader035.fdocuments.in/reader035/viewer/2022072013/56649e545503460f94b4a8d6/html5/thumbnails/5.jpg)
Cleavage Vs Fracture
• Cleavage is the tendency for some minerals to break along flat surfaces.
• Fracture is the tendency for some minerals to break unevenly along curved or irregular surfaces.
![Page 6: 1-2 Identifying Minerals 1.Classify Minerals using common mineral identification techniques. 2.Explain special properties of minerals.](https://reader035.fdocuments.in/reader035/viewer/2022072013/56649e545503460f94b4a8d6/html5/thumbnails/6.jpg)
![Page 7: 1-2 Identifying Minerals 1.Classify Minerals using common mineral identification techniques. 2.Explain special properties of minerals.](https://reader035.fdocuments.in/reader035/viewer/2022072013/56649e545503460f94b4a8d6/html5/thumbnails/7.jpg)
Hardness – a mineral’s resistance to being scratched.
• Use Moh’s hardness scale where 1 is softest and 10 is hardest.
![Page 8: 1-2 Identifying Minerals 1.Classify Minerals using common mineral identification techniques. 2.Explain special properties of minerals.](https://reader035.fdocuments.in/reader035/viewer/2022072013/56649e545503460f94b4a8d6/html5/thumbnails/8.jpg)
Density – The measure of how much matter there is in a given amount of space.
• D = m/v• Water is 1g/cm3
• Specific gravity – the ratio of a mineral’s density to water’s
• Gold is 19
![Page 9: 1-2 Identifying Minerals 1.Classify Minerals using common mineral identification techniques. 2.Explain special properties of minerals.](https://reader035.fdocuments.in/reader035/viewer/2022072013/56649e545503460f94b4a8d6/html5/thumbnails/9.jpg)
Special Properties
• Fluorescence – minerals glow under a black light.
• Chemical Reaction – reacts with acid
• Optical properties – when looking through a mineral the appearance changes
• Taste – mineral has a distinctive taste.
• Magnetism – mineral will attract iron objects.
• Radioactivity – minerals that contain uranium or radium can be detected with a Geiger counter