1. Amelinckx S, Delavignette P (1961) Electron microscope observation of dislocations in talc. J Apll Phys 32: 341–351
2. Ampian SG (1976) Asbestos minerals and their nonasbestiform analogs. In: Asher IM, McGrath PP (eds) Proc.lst FDA office of science summer symposium on Electron microscopy of microfibers, Pennsylvania State Univ, Univ Park, PA, Aug. 23–25, 27 p
3. Campbell WJ, Blake RL, Brown LL, Cather EE, Sjoberg JJ (1977) Selected silicate minerals and their asbestiform varieties, mineralogical definitions and identification-characterization. Information Circular/1977 - IC8751. US Bureau of Mines, 56 p
4. Campbell WJ, Steel EB, Virta RL, Eisner MH (1979) Relationship of mineral habit to size characteristics for tremolite, cleavage fragments and fibers. Rep Investigations/1979-R18367. US Bureau of Mines, 18 p
5. Campbell WJ, Huggins CW, Wylie AG (1980) Chemical and physical characterization of amo-site, chrysotile, crocidolite, and nonfibrous tremolite for oral ingestion studies by the National institute of environmental health sciences. Rep Investigations/1980-RI8452. US Bureau of Mines, 63 p