 | | Journal (article/letter/editorial) | | Large Andalusite Crystals from Campbell County, Virginia: Their Alteration to Kyanite and Sillimanite... exceptionally large pris matic crystals of andalusite were discovered in association with milky quartz...veins at a previously unknown site in Campbell County, Virginia (Giannini et a l . , 1986). A l  though...to form well-preserved pseudomorphs, unaltered andalusite is still present. These pseudomorphs are more...0 . There is a strong possibility that these andalusite crystals (both fresh and replaced) are close |  | | Journal (issue) | | 38 February 1992 No. 1 LARGE ANDALUSITE CRYSTALS FROM CAMPBELL COUNTY, VIRGINLA Richard S. Mitchell1...1986, exceptionally large prismatic crystals of andalusite were discovered in association with milky quartz...veins at a previously unknown site in Campbell County, Virginia (Giannini and others, 1986; Figure 1)...to form well-preserved pseudomorphs, unaltered andalusite is still present (Figure 2). Thepseudomorphs...qOSiO,. There is a strong possibility that these andalusite crystals (both fresh and replaced) are close |  | | Report (issue) | | STATE OF SOUTH DAKOTA Nils Boe, Governor MINERALOGY OF THE BLACK HILLS by WILLARD LINCOLN ROBERTS...Associate in Mineralogy Museum of Geology, South Dakota School of Mines and Technology and GEORGE RAPP...Department of Geology and Geological Engineering, South Dakota School of Mines and Technology With the Editorial...Mineralogy South Dakota School of Mines and Technology BULLETIN NUMBER 18 of the South Dakota School of...of Mines and Technology Rapid City, South Dakota PUBLICATIONS STAFF F. L. Partlo J. T. Thomas President |  | | Catalog/List | | ••••••••••••••••••••• $10.40 Placenticeras whitfieldi (Cret.) South Dakota Complete, polished w/sutures. 54 W 2291 9 cm...•••••••••••••••. $8.70 Hyracodon species (Oligo.) South Dakota Single molar in jaw fragment. 54 W 4046 •.....•• ~30.0Q Merycoidodon culbertsoni (Oligo.) South Dakota Complete skull, some restoration; full dentition...•••••••••••••••••••• $469.00 Mesohippus species (Oligo.) South Dakota Single molar. PB-7 ••••••••••••••••••••••••••...•• $12.50 Oreodon species (Oligo.) South Dakota Single molar in jaw fragment. 53 W 5205 •••••••••.••• |
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