Mineral Identification
description
Transcript of Mineral Identification
![Page 1: Mineral Identification](https://reader036.fdocuments.in/reader036/viewer/2022081520/568165e5550346895dd9050e/html5/thumbnails/1.jpg)
Mineral Identification
Mr. Jensen Ref: McGuire – ES/PS
![Page 2: Mineral Identification](https://reader036.fdocuments.in/reader036/viewer/2022081520/568165e5550346895dd9050e/html5/thumbnails/2.jpg)
Identifying Minerals• Minerals can be
identified using their distinctive physical and chemical properties.
• Mineral properties include:– _______________– _______________– _______________– _______________– _______________– _______________– _______________
![Page 3: Mineral Identification](https://reader036.fdocuments.in/reader036/viewer/2022081520/568165e5550346895dd9050e/html5/thumbnails/3.jpg)
Table 2-1: Common
Rock Forming Minerals
![Page 4: Mineral Identification](https://reader036.fdocuments.in/reader036/viewer/2022081520/568165e5550346895dd9050e/html5/thumbnails/4.jpg)
Minerals: Color• Color
– Many minerals have a characteristic color
– _______________ may discolor certain light colored minerals• Ex. Quartz and calcite
which are typically colorless.
– Dark color minerals typically do not have this problem.
![Page 5: Mineral Identification](https://reader036.fdocuments.in/reader036/viewer/2022081520/568165e5550346895dd9050e/html5/thumbnails/5.jpg)
Minerals: Luster• Luster
– Describes the way light is ____________ from the freshly cut surface of a mineral.
– _______________ Luster• Hard shiny look like polished metal.• Light is unable to penetrate.• Ex. Pyrite, galena and magnetite
– _______________ Luster• May be shiny but some light is able to penetrate.• Includes glassy, waxy, pearly and earthy (dull) lusters• Ex. Calcite, quartz and feldspar
![Page 6: Mineral Identification](https://reader036.fdocuments.in/reader036/viewer/2022081520/568165e5550346895dd9050e/html5/thumbnails/6.jpg)
Minerals: Streak• Streak
– The color of the mineral in a _______________ form.
– The test for streak is performed by rubbing a fresh corner of the mineral across a white, unglazed __________ __________.
– Several minerals have a streak that is not the same color as the mineral itself.• Most metallic luster minerals
have a dark colored streak. (Ex. Graphite, Pyrite)
![Page 7: Mineral Identification](https://reader036.fdocuments.in/reader036/viewer/2022081520/568165e5550346895dd9050e/html5/thumbnails/7.jpg)
Minerals: Crystal Structure
• Crystal Structure– Minerals form
characteristically ____________ crystals
– A crystal is a regularly shaped solid formed by an __________ __________ of atoms.
![Page 8: Mineral Identification](https://reader036.fdocuments.in/reader036/viewer/2022081520/568165e5550346895dd9050e/html5/thumbnails/8.jpg)
Minerals: Hardness• Hardness
– Minerals differ in hardness– Tested by _______________ mineral with other materials
of known hardness– Friedrich _______ (Geologist) created the _______ scale
for hardness
![Page 9: Mineral Identification](https://reader036.fdocuments.in/reader036/viewer/2022081520/568165e5550346895dd9050e/html5/thumbnails/9.jpg)
Minerals: Cleavage• Cleavage
– If a mineral breaks readily along ______ _________ it shows cleavage
– Many minerals break along ______ _________ called cleavage planes
– Minerals that break along even surfaces that do not follow atomic arrangement (crystal faces) are said to show ______________
![Page 10: Mineral Identification](https://reader036.fdocuments.in/reader036/viewer/2022081520/568165e5550346895dd9050e/html5/thumbnails/10.jpg)
Minerals: Density• Density
– Minerals vary in density and __________ __________ (ratio of density and water)