Camulodunum type 262, le type Besançon and Central Gaulish granite-tempered ware

Details of thin-sections from ROANNE

TS ID	Images	form	ref	petrology	Thin section
181		Class 1/2	Fosse Xa	TF1 Granite tempered	TS
182	Hi-resolution DjVu image (274 kb).	Class 1/2	St Jo 547	TF1 Granite tempered	TS AGV: B182 good slide for publication - shows orthoclase melted down into clay: masses of black mica in granite perthitic texture in orthoclase large inclusion of ?ferruginous sandstone - angular quartz in dark matrix
183		Class 1/2	St Jo 304	TF1 Granite tempered	TS AGV: B181,B182,B183 are all same group Principal feldspar in granite = microcline Pegmatite In situ weathering of granite (river beds running through granite)
184		Jar?	Fosse Xa	TFB184	TS AGV: Weathered granite, rounded fragments. Matrix with biotite, but one stage further than B181-B183 Chert - sedimentary.
185		Jar?	Fosse Xa	TFB184	TS AGV: chert + granite Graphic intergrowth occurs with orthoclase and microcline = graphic granite
186		Jar?	Fosse Xa	TFB184	TS AGV: on B184,B185,B186 More varied than B181-B183 group. Weathered but perhaps not far from source. But although groups are distinct there is not so much difference in the basic matrices. B181-183: microcline granite, bmic B184-186: chert, granite, quartz, red clay pellets Need limestone area with granite for B184-B186 & B180 IF: (with B184, B185, B186) Chert OK and altered feldspar ?haematite red clay pellets, altered graphic intergrowth Quartz with chert material stuck to it? Not volcanic, Polycrystalline quartz - sedimentary agv: in addition to above rounded granite fine grained sandstone no mica (or very occasional biotite) look for sedimentary limestone with silicaceous inclusions agv not convinced of chert agv says cf B222 (Tours)
188		Tile	-	TFB184	TS
189		Tile	-	TFB184	TS

• Url: http://www.potsherd.org.uk/papers/cgmw/db/site2ts/Roanne • Author: • Last updated: 29 July, 2004 •