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"Facing Several Unknown Minerals" Rocks and Minerals PPT Courseware 3
What methods have we learned to observe and describe rocks and minerals? Let’s review it together!
Observation methods - look (you can use tools such as magnifying glass and microscope), touch, carve, knock, and drop hydrochloric acid
Describe rocks—smoothness, particle size, weight, transparency, hardness, pattern, color, biological remains, etc.
Describe minerals—color, streaks, hardness, transparency, gloss, shape
What minerals are they?
There are three unknown minerals in the box. Can we know what minerals they are?
practise
1. Judgment
1. Some minerals can be picked up with magnets. ( )
2. When geologists identify minerals, they often use microscope observation based on field observations, and further confirm by comparing data and illustrations. ( )
3. Drop dilute hydrochloric acid on the mineral. If carbon dioxide bubbles are produced, it may be calcite. ( )
4. Massive minerals, iron-black or dark red in color, cherry-red streaks, ore powder can be used to make red paint and red pencils. This mineral is quartz. ( )
2. Connection
Marble has fine particles, layered structure, and a crisp sound when struck.
Slate coarse or medium grained, loose structure
Shale: Coarse or medium grained, compact structure, different colors, hard
Granite has coarse or medium grains, tight structure, crystal clear, and some textures
Sandstone: fine particles, layered structure, no "bang" sound after knocking
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"Facing Several Unknown Minerals" Rocks and Minerals PPT Download:
"Facing Several Unknown Minerals" Rocks and Minerals PPT Download Part One: Introduction of New Knowledge Students, what methods do you know for observing and describing rocks and minerals? Observation methods: look, smell, touch, carve, knock, drop hydrochloric acid. Describe rocks: color, smoothness...
"Facing Several Unknown Minerals" Rocks and Minerals PPT:
"Facing Several Unknown Minerals" Rocks and Minerals PPT Part One: Review and Communication What methods have we learned to observe and describe rocks and minerals? Observation methods: Look, touch, knock, engrave, drop hydrochloric acid... Face several unknown minerals...
"Facing Several Unknown Minerals" Rocks and Minerals PPT Courseware 2:
"Facing Several Unknown Minerals" Rocks and Minerals PPT Courseware 2 Learning Objectives: Comprehensively use methods such as observing mineral colors and streaks, testing mineral hardness, observing mineral transparency and gloss, and searching for information to study unknown minerals and write Draw out feature cards. since..