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mineral | PPL (lower polar rotation) |
PPL (stage rotation) |
XP (stage rotation) |
optic figure (stage rotation) |
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amesite (FKM-215): Cr-bearing amesite serpentine in hydrothermally altered chromitite, with magnesio-chromite/chromite |
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kellyite (FKM-243): kellyite (serpentine group) in amphibolite facies calcareous meta-Mn-metasomatite, with kutnohorite, alleghanyite and galaxite spinel (note: thin section is cut somewhat thin) |
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pyrophyllite (FKM-167): pyrophyllite in a meta-“advanced argillic” metasomatite, with kyanite |
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talc (FKM-101): talc in greenschist facies meta-ultramafic, with clinochlore chlorite |
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muscovite (FKM-100): phengitic muscovite (dioctahedral mica) in blueschist, with glaucophane amphibole, epidote and quartz |
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muscovite (FKM-292): muscovite (dioctahedral mica) in tourmaline-bearing mica schist |
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muscovite (FKM-312): Cr-bearing (0.XX Cr apfu) muscovite (“fuchsite”; dioctahedral mica) in biotite-zone metapelite schist, with quartz and plagioclase feldspar |
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aluminoceladonite (FKM-171): Mn-bearing (0.12 MnT apfu) aluminoceladonite (dioctahedral mica) in meta-Mn-exhalite, with phlogopite mica and alkali feldspar |
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phlogopite (FKM-11): phlogopite (trioctahedral mica) in granulite facies meta-blackwall, with sapphirine |
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phlogopite (FKM-41): zoned phlogopite (trioctahedral mica) in sövite carbonatite, with diopside clinopyroxene and calcite |
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phlogopite (FKM-56): zoned phlogopite (trioctahedral mica) in haüyne melilitolite (“okaite”), with calcite, melilite and magnetite |
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phlogopite (FKM-156): phlogopite (trioctahedral mica) in greenschist facies meta-blackwall, with chlorite |
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phlogopite (FKM-171): Mn-bearing (0.39 MnT apfu) phlogopite (trioctahedral mica) in meta-Mn-exhalite, with alkali feldspar and a hollandite-group oxide |
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phlogopite (FKM-193): Mn-bearing (~0.10 Mn2+ apfu) phlogopite (trioctahedral mica) in high grade calcareous Ba-Mn-metasomatite, with calcite, melanotekite and cymrite |
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phlogopite (FKM-295): Ba-bearing (0.16 Ba apfu; 2.53 Mg apfu) phlogopite (trioctahedral mica) in high grade B-bearing skarn, with serendibite, pargasite amphibole and diopside clinopyroxene |
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biotite (FKM-46): biotite (trioctahedral mica) in granulite facies B-bearing metapelite, with garnet, K-feldspar and partially altered cordierite |
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biotite (FKM-78): biotite (trioctahedral mica) in high grade low-silica feldspathic gneiss, with orthoclase mesoperthite |
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biotite (K-65): red biotite (presumably Mg- and Ti-rich; trioctahedral mica) in mica peridotite, with spinel and forsterite olivine (covered thin section) |
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margarite (FKM-322): beryllian margarite in altered pegmatite |
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gillespite (FKM-53b): gillespite in Ba-metasomatite, with quartz, cerchiaraite-(Fe) and titantaramellite |
presumably U(-) but no optic figure available | |||
clinochlore (FKM-101): clinochlore chlorite in greenschist facies meta-ultramafic, with talc |
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clinochlore (FKM-156): clinochlore chlorite in greenschist facies meta-blackwall, with phlogopite and chrysoberyl |
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clinochlore (FKM-290): clinochlore chlorite in high pressure meta-gabbroid, with epidote and zoisite |
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pyrosmalite-(Mn) (FKM-190): anomalously weakly biaxial Fe-bearing pyrosmalite-(Mn) (4.06 Mn2+ apfu; 3.62 Fe2+ apfu; formerly “manganpyrosmalite”) in high grade meta-Mn-metasomatite, with rhodochrosite, quartz and pyroxmangite | ||||
stilpnomelane (FKM-15): stilpnomelane in blueschist facies ferruginous meta-quartzite, with quartz and spessartine garnet |
presumably B(-) but no optic figure available |
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stilpnomelane (FKM-141): stilpnomelane in blueschist facies Na-metasomatized meta-Fe-exhalite, with riebeckite |
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zussmanite (FKM-147): zussmanite in blueschist facies ferruginous metaquartzite, with deerite and quartz |
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sanbornite (FKM-53): sanbornite in Ba-Ti-metasomatite, with quartz, titantaramellite and actinolite |
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cavansite (FKM-170): cavansite in zeolite facies altered basalt, with stilbite |
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sorosilicates and cyclosilicates in thin section
single chain inosilicates in thin section
double chain and more complex inosilicates in thin section
tectosilicates and miscellaneous silicates in thin section