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Hand Samples- Oceanography

Description

Oceanography hand samples pt 1

Flashcards by A Noble, updated more than 1 year ago

	Created by A Noble about 7 years ago

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Resource summary

Question	Answer
Image: # Shale (binary/octet-stream)	Shale Deposition of volcanic ash Exhibits upward fining Mud cracks on top
Image: 1 Amphibole (binary/octet-stream)	Amphibole Tremolite Same structure throughout, but different habits Native mineral
Image: 2 Quartz (binary/octet-stream)	Quartz Grew in vein on metamorphic rock Same structure, different habits
Image: 3 Hornblend (binary/octet-stream)	Hornblend Filled in gaps on host rock
Image: 4 Muscovite (binary/octet-stream)	Muscovite Sheet silicate
Image: 6 Magnetite (binary/octet-stream)	Magnetite Iron in different valence stages
Image: 7 Apatite (binary/octet-stream)	Apatite Large euhedral crystals Grew in cavity
Image: 9 Diorite (binary/octet-stream)	Diorite Intermediate Intrusive
Image: 8 Granite (binary/octet-stream)	Granite Felsic More potassium feldspar, quartz Intrusive
Image: 10 Chlorite (binary/octet-stream)	Chlorite Index mineral Low-grade metamorphism (low heat and pressure)
Image: 11 Talc (binary/octet-stream)	Talc Metamorphosed mudstone Sheet silicate
Image: 12 Pyrite (binary/octet-stream)	Pyrite Iron sulfide May be found in sediments due to sulfate-reducing bacteria
Image: 13 Schist With Pyrite (binary/octet-stream)	Schist Metamorphized mudstone Often co-occurs with pyrite Final form is gneiss
Image: 14 Quartzite (binary/octet-stream)	Quartzite Metamorphosed sandstone
Image: 18 Basalt (2 2) (binary/octet-stream)	Basalt Extruded into seawater Mafic Vesicles from rapid cooling
Image: 20 Collection Of Shell Building Organisms (binary/octet-stream)	Collection of shell-building organisms Plankton, coralline algae, gastropods, clams, corals Form limestones

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