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21 - 30 of 47 search results for Magnette |u:p1acollections.esc.cam.ac.uk or magnetite |u:p1acollections.esc.cam.ac.uk
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  2. Apatite · Minerals · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals/apatite.html
    9 Apr 2024: Apatite crystal structure, CrystalMaker. Formula. Ca. 5. (PO. 4. ). 3. (OH,F,Cl). Structure. Non-silicate. Crystal System. Crystal system: hexagonal (-). Physical Properties. Colour in hand specimen: green, white, yellow, blue brown etc. Hardness: 5.
  3. Garnet · Minerals · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals/garnet.html
    9 Apr 2024: Garnet (euhedral) in hand specimen. Formula. (Mg,Fe,Ca). 3. Al. 2. Si. 3. O. 12. Structure. Orthosilicate. Crystal System. Crystal system: cubic. Physical Properties. Colour in hand specimen: typically red. Cleavage: none. Hardness: 6-7.5. Optical
  4. Pyrite · Minerals · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals/pyrite.html
    9 Apr 2024: Pyrite crystals, with metallic lustre. Pyrite crystals within quartz. Pyrite cubis crystal structure, showing octahedral coordination of Fe by S. Formula. FeS. 2. Structure. Non-silicate. Crystal System. Crystal system: cubic. Physical Properties.
  5. L120 - granodiorite · Igneous Rocks · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/igneous-rocks/l120.html
    9 Apr 2024: Alteration. Zonation. Accessory minerals:. - Sphene. - Magnetite. - Apatite. Rock History.
  6. L172 - ultramafic cumulate · Igneous Rocks · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/igneous-rocks/l172.html
    9 Apr 2024: Alteration to magnetite and serpentine, particularly along the curving cracks. Cracks across the thin-section, could be due to expansion of the rock as the olivine was altered.
  7. Quartz · Minerals · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals/quartz.html
    9 Apr 2024: Quartz single crystal, no cleavage, conchoidal fracture. Quartz prisms, vitreous lustre. Quartz prisms (roughly hexagonal habit). Quartz crystal structure (trigonal unit cell), CrystalMaker. Formula. SiO. 2. Structure. Framework silicate. Crystal
  8. Olivine · Minerals · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals/olivine.html
    9 Apr 2024: Olivine hand specimen, no cleavage. Olivine crystal structure, CrystalMaker. Formula. (Mg,Fe). 2. [SiO. 4. ]. Structure. Orthosilicate. Crystal System. Crystal system: orthorhombic () (-). Physical Properties. Colour in hand specimen: pale green.
  9. Chlorite · Minerals · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals/chlorite.html
    9 Apr 2024: Chlorite crystal structure, CrystalMaker. Formula. (Mg,Fe. 2+. ,Fe. 3+. ,Mn,Al). 12. [(Si,Al). 8. O. 20. ](OH). 16. Structure. Sheet silicate. Crystal System. Crystal system: monoclinic () (-). Physical Properties. Colour in hand specimen: green.
  10. Fluorite · Minerals · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals/fluorite.html
    9 Apr 2024: Fluorite crystal hand specimen, purple hue. Fluorite crystal structure (cubic), CrystalMaker. Formula. CaF. 2. Structure. Non-silicate. Crystal System. Crystal system: cubic. Physical Properties. Colour in hand specimen: extremely variable:
  11. Dolomite · Minerals · 1A Collections

    https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals/dolomite.html
    9 Apr 2024: Dolomite in hand specimen. Dolomite crystal structure, CrystalMaker. Formula. CaMg(CO. 3. ). 2. Structure. Non-silicate. Crystal System. Crystal system: trigonal (-). Physical Properties. Colour in hand specimen: white, often tinged with yellow or

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