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Rock Thin Sections Use of a digital microscope Dr Peter Copley Newcastle College June 2004
Philip Harris (Motic) Microscope Cost: about £1200 (to the Biology dept!) Includes software
Digital camera Binocular eyepiece (x10) Objective Lenses (x4,x10,x40, X100 oe)
Main Power switch Camera power Power input usb
No polarising facilities Adequate for basic textural images. Exam papers only use/expect monochromatic drawings.
Acknowledgement Thin sections Geology department Keele University
Desert sandstone (x40)
Keele Sandstone (x40)
Sherwood Sandstone (x40) ‘Bunter Sst’
Oolitic Limestone (x40)
Limestone – calcite crystals in shell (x100)
Peridotite (x40) Olivine Pyroxene
Porphyrytic Olivine Basalt Groundmass
Ophitic Texture (x40) Pyroxene Feldspar
Zoned Olivine crystal (x40)
Spherulitic Pitchstone (x40)
Garnet Mica Schist (x100) Mica
Chiastolite Slate (x40)
Gneiss (x40)Felsic minerals Mafic minerals
Sillimanite needles (x400)
Kyanite & Biotite (x100)
What if you cannot afford £1200?
A cheaper alternative! About £40 But discontinued in 2002 by Intel. But now available…….
£60 from www.thepcstore.co.uk
Don’t expect the image quality to be as good!!!
Oolitic Limestone (x60)
Porphyritic Basalt (x60)
Ophitic Texture (x60) Pyroxene Feldspar
Chiastolite Slate (x60)
Will it do??? That’s up to you!
ROCKS under the microscope
Compaction and cementation Melting and solidification Heat and/or pressure metamorphic igneous sedimentary Melting Weathering and erosion Heat and pressure.
MINERAL AND ROCK IDENTIFICATION Unit 3A. AMETHYST (QUARTZ) Category: Mineral.
Difference Between a Rock and a Mineral
CH 6 Rocks & Rock Cycle Quiz Review. Plagioclase feldspar, biotite, pyroxene, amphibole, and olivine are common minerals in felsic/mafic igneous rocks.
Chapter 4 section 3. Rocks that have been changed because of changes in Heat Pressure Or the presence of hot, watery fluids Can be formed from igneous,
After 7.5 mins, 1 st P wave arrived at New York. EAS 220 Lab 4: Igneous Rocks.
LET’S REVIEW MINERALS & ROCKS!
Matching Metamorphi c Rocks with their Sedimentar y Source Rocks.
Quiz Get out you ESRT and a piece of paper The following questions are from your ESRT. You’ll have a minute per question…
ROCK IDENTIFICATION LAB. What type of rock is this? Where or how is it formed?
Metamorphic Rocks. Metamorphic rocks Subjected to heat (and stress) Results in changes in the appearance –Mineralogical –Textural Any rock can be metamorphosed.
Metamorphic Rocks. Questions What are metamorphic rocks? What processes are involved in forming metamorphic rocks?
Mahrous M. Abu El-Enen Faculty of Science, Mansoura University Igneous and metamorphic Petrology.
4-4 pgs IN: What are some ways that sedimentary rock can form? Can you classify the four we looked at?
$100 Minerals Igneous Rocks Sedimentary Rocks Metamorphic Rocks Rock Stuff $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100.
Rocks The Geologic Dictionary. Rock Cycle Magma Igneous Rocks Sedimentary Rocks Metamorphic Rocks Sediment Crystallization Melting Metamorphism Lithification.
GEOS 254: INTRODUCTION Petrological microscopes are used to: (a) identify the minerals present (a) identify the minerals present (b) determine the microstructure.
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