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41 - 47 of 47 search results for magnetite |u:p1acollections.esc.cam.ac.uk |d=2024
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  2. L162 Basalt, porphyritic · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/igneous-rocks/item/12.html
    9 Apr 2024: Some areof magnetite, clinopyroxene and other minerals. Extensive alteration along abundant cracks. ... Groundmass. - Fine-grained. Plagioclase feldspar needles, clinopyroxene, some olivine (mostly altered), and opaques, probably magnetite.
  3. Browse Items · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/items%3Fpage=21&sort_field=Dublin+Core,Title.html
    9 Apr 2024: Browse Items (264 total). Page. of 27. Sort by:. Compare with phenocryst. Formula Fe3O4 Structure Non-silicate Crystal System Crystal system: cubic Physical Properties Colour in hand specimen: blackStreak: blackCleavage: noneHardness: 7.5-8 Optical
  4. Browse Items · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/items%3Fpage=6&sort_field=Dublin+Core,Creator.html
    9 Apr 2024: Browse Items (264 total). Page. of 27. Sort by:. Formula (K,Na)[AlSi3O8] Structure Framework silicate Crystal System Crystal system: monoclinic (-) or triclinic () (-) Physical Properties Colour in hand specimen: white or pink Cleavage: two at 90
  5. Browse Items · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/items%3Fpage=7&sort_field=Dublin+Core,Title&sort_dir=d.html
    9 Apr 2024: Browse Items (264 total). Page. of 27. Sort by:. Formula Fe3O4 Structure Non-silicate Crystal System Crystal system: cubic Physical Properties Colour in hand specimen: blackStreak: blackCleavage: noneHardness: 7.5-8 Optical Properties Colour in
  6. Browse Items · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/items/browse%3Ftags=igneous&sort_field=Dublin+Core,Creator.html
    9 Apr 2024: Browse Items (7 total). Tags: igneous. Sort by:. Formula (Na,K)0-1Ca2(Mg,Fe2+,Fe3+,Al)5Si6-7.5Al2-0.5O22(OH)2 Structure Chain silicate Crystal System Crystal system: monoclinic () (-) Physical Properties Colour in hand specimen: black Cleavage:
  7. Browse Items · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/items/browse%3Ftags=igneous&sort_field=Dublin+Core,Title.html
    9 Apr 2024: Browse Items (7 total). Tags: igneous. Sort by:. Formula (Na,K)0-1Ca2(Mg,Fe2+,Fe3+,Al)5Si6-7.5Al2-0.5O22(OH)2 Structure Chain silicate Crystal System Crystal system: monoclinic () (-) Physical Properties Colour in hand specimen: black Cleavage:
  8. Browse Items · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/items/browse%3Ftags=igneous&sort_field=Dublin+Core,Title&sort_dir=d.html
    9 Apr 2024: Browse Items (7 total). Tags: igneous. Sort by:. Formula SiO2 Structure Framework silicate Crystal System Crystal system: trigonal () Physical Properties Colour in hand specimen: colourless Lustre: vitreous Pleochroism: none Cleavage:

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