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-- T-4518 <br />69 <br />Figure 43. Photomicrographs of sulfosalt sage minerals replacing base-metal sage <br />minerals. a) Tennantite (tn) replacing, or possibly intergrown with, chalcopyrite (c) and/or ~ - <br />galena (g); earlier quartz (q) and sphalerite (s) are also present; sample RM-6(460'). ~_- <br />Reflected light, uncrossed polars; field of view is 0.2 mm by 0.3 mm. b) Tetrahedrite (tt) - <br />replacing, or possibly intergrown with, sphalerite and chalcopyrite; stromeyerite (st) m~ty <br />be a replacement feature or avug-filling; sample AP-1-30. Reflected light, uncrossed <br />polars; field of view is 0.5 mm by 0.7 mm. c) Stromeyerite replacing or filling a vug in <br />sphalerite; sample AP-I-30. Reflected light, uncrossed polars; field of view is 3.5 mm by <br />5.0 mm. <br />