ID: 1104
rec_id: 1104
site_name: Eastern Mesabi district
oremin: In cherty taconite, grunerite develops as tabular crystals and fibrous radiating sheaves composed of fine needles"" (French, 1968, p. 36). ""Much of the cummingtonite and hornblende occurs as fibrous masses that surround and replace coarser crystals of fayalite and pyroxene"" (French, 1968, p. 40).
devel: taconite deposits
json: {"id":"http:\/\/mrdata.usgs.gov\/asbestos\/record\/1104","type":"Feature","geometry":{"type":"Point","coordinates":[-91.91715959126,47.66691713803]},"properties":{"state":"MN","county":"Saint Louis","site_name":"Eastern Mesabi district","devel":"taconite deposits","latitude":"47.667","longitude":"-91.917","oremin":"In cherty taconite, grunerite develops as tabular crystals and fibrous radiating sheaves composed of fine needles\"\" (French, 1968, p. 36). \"\"Much of the cummingtonite and hornblende occurs as fibrous masses that surround and replace coarser crystals of fayalite and pyroxene\"\" (French, 1968, p. 40).","assocmin":"numerous minerals reported--see French (1968)","hostrock":"taconite (banded iron-formation)","mineral":[{"role":"asbestos","name":"cummingtonite"},{"role":"asbestos","name":"grunerite"}],"reference":[{"citation":"Carter (1974)","source":"ofr20061211","reference":"Carter, L.J., 1974, Pollution and public health--Taconite case poses major test: Science, v. 186, no. 4158, p. 31-36."},{"citation":"French (1968)","source":"ofr20061211","reference":"French, B.M., 1968, Progressive contact metamorphism of the Biwabik iron-formation, Mesabi Range, Minnesota: Minneapolis, Minn., University of Minnesota, Minnesota Geological Survey Bulletin 45, 103 p."},{"citation":"Great Lakes Research Advisory Board (1975)","source":"ofr20061211","reference":"Great Lakes Research Advisory Board, 1975, Asbestos in the Great Lakes basin, with emphasis on Lake Superior--A report to the International Joint Commission: Great Lakes Research Advisory Board, 100 p."},{"citation":"Gunderson and Schwartz (1962)","source":"ofr20061211","reference":"Gunderson, J.N., and Schwartz, G.M., 1962, The geology of the metamorphosed Biwabik iron-formation, eastern Mesabi district, Minnesota: Minneapolis, Minn., University of Minnesota, Minnesota Geological Survey Bulletin 43, 139 p., 1 plate."},{"citation":"Morey and others (1972)","source":"ofr20061211","reference":"Morey, G.B., Papike, J.J., Smith, R.W., and Weiblen, P.W., 1972, Observations on the contact metamorphism of the Biwabik iron-formation, east Mesabi district, Minnesota, in Doe, B.R., and Smith, D.K., eds., Studies in mineralogy and Precambrian geology: Geological Society of America Memoir 135, p. 225-264."},{"citation":"White (1954)","source":"ofr20061211","reference":"White, D.A., 1954, The stratigraphy and structure of the Mesabi Range, Minnesota: Minnesota Geological Survey Bulletin 38, 92 p., 4 plates."}]}}
url: https://mrdata.usgs.gov/asbestos/show-asbestos.php?rec_id=1104