Abstract
The Hole 16 deposit is a small unexposed F-Sn-W exoskarn deposit with underlying associated endoskarn, greisenized granite and largely ungreisenized Carboniferous ‘Elizabeth Creek’ granite. Sphalerite geobarometry indicates that this was a high level intrusion. The skarn formed above a granite cusp and is mantled by pure marble. Assemblages and textures representing successive stages of skarn genesis are: (1) massive andradite, (2) massive Sn-rich garnet + magnetite ± clinopyroxene ± fluorite, (3) ‘wrigglite’ which refers to a characteristic fine-grained contorted rhythmically layered texture, consisting of alternating layers of magnetite and fluoro-vesuvianite + fluorite, or cuspidine ± fluorite and magnetite ± Zn-Fe spinel, (4) massive fluoro-vesuvianite + fluorite, (5) Fe-F-amphibole + Fe-F-biotite + Fe-F-phyllosilicate + calcite ± scheelite, (6) chlorite ± hematite ± clay minerals. Assemblages (5) and (6) are found in very minor amounts throughout the skarn. Stages (1)–(4) also correspond to the skarn...
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