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search results for magnetite |d>16Apr2023<18Apr2024 |u:p1acollections.esc.cam.ac.uk
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Magnetite · 1A Collections
https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals/item/59.html9 Apr 2024: Magnetite. Title. Magnetite. Subject. Magnetite is the most abundant oxide in igneous rock. ... Silver-black. Metallic lustre. No cleavage. Rock Specimens. Mineral Name. magnetite. iron oxide. -
Magnetite · Minerals · 1A Collections
https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals/magnetite.html9 Apr 2024: Relief: high. Isotropic. Mineral Specimens. M501 Magnetite. Brazil. Crystals showing the characteristic octahedral form. ... Silver-black. Metallic lustre. No cleavage. Rock Specimens. Mineral Name. magnetite. iron oxide. -
L120 Granodiorite · 1A Collections
https://p1acollections.esc.cam.ac.uk/p1acollections/items/show/8.html9 Apr 2024: Alteration. Zonation. Accessory minerals:. - Sphene. - Magnetite. - Apatite. Rock History. -
Minerals · 1A Collections
https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals.html9 Apr 2024: Minerals. Rocks comprise minerals. In order to understand the paragenesis of a rock, be it igneous, sedimentary or metamorphic, we must identify its constituent minerals. The aim of this collection is to detail the structural, physical and optical -
L141 Gabbro · 1A Collections
https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/igneous-rocks/item/10.html9 Apr 2024: The olivine has decomposed to magnetite and serpentine. Relict olivine grains display characteristic curving cracks andClinopyroxene (augite). - ... Some simple twinning. Accessory minerals. - Opaque, interstitial, probably magnetite. Rock History. -
L162 Basalt, porphyritic · 1A Collections
https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/igneous-rocks/item/12.html9 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. -
L141 - gabbro · Igneous Rocks · 1A Collections
https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/igneous-rocks/l141.html9 Apr 2024: The olivine has decomposed to magnetite and serpentine. Relict olivine grains display characteristic curving cracks andClinopyroxene (augite). - ... Some simple twinning. Accessory minerals. - Opaque, interstitial, probably magnetite. Rock History. -
Hematite · Minerals · 1A Collections
https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals/hematite.html9 Apr 2024: Bottryoidal hematite crystal. Hematite crystal strucutre, CrystalMaker. Formula. Fe. 2. O. 3. Structure. Non-silicate. Crystal System. Crystal system: trigonal (-). Physical Properties. Colour in hand specimen: black, steel-grey and bright to dull -
Mica, biotite` · Minerals · 1A Collections
https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/minerals/biotite.html9 Apr 2024: Mica, biotite. hand specimen of biotite mica. Crystals of bioitie mica with perfect basal cleavage. Biotite sheet silicate crystal structure, CrystalMaker. Formula. K. 2. (Mg,Fe. 2+. ). 6-4. (Fe. 3+. ,Al,Ti). 0-2. [Si. 6-5. Al. 2-3. O. 20. ](OH,F). -
L162 - porphyritic basalt · Igneous Rocks · 1A Collections
https://p1acollections.esc.cam.ac.uk/p1acollections/exhibits/show/igneous-rocks/l162.html9 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.
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