Kyanite bearing micaschist, Bruncu Nieddu.<\/p>\n
About<\/span> 0.5 km further<\/span> north<\/span> along<\/span> the track<\/span> we<\/span> reach<\/span> the kyanite+biotite<\/span> isograd<\/span> with<\/span>mm- to<\/span> cm-size<\/span> bluish<\/span> kyanite<\/span> crystals<\/span> in the matrix<\/span> of<\/span> the mylonites<\/span> and in quartz-rich<\/span> veins<\/span> (Fig. 1). The kyanite+biotite<\/span> isograd<\/span> is<\/span> marked<\/span> by<\/span> the first appearance<\/span> of<\/span>kyanite<\/span> crystals<\/span>. The rocks<\/span> consist<\/span> of<\/span> porphyroblasts<\/span> of<\/span> staurolite, kyanite<\/span>, andplagioclase<\/span> enveloped<\/span> in a mylonitic<\/span> matrix<\/span> of<\/span> muscovite, biotite, chlorite<\/span>, and ilmenite.<\/span> Temperatures<\/span> up to<\/span> 595 \u00b0C and pressures<\/span> up to<\/span> 0.67 GPa<\/span> have<\/span> been<\/span> reported<\/span> by<\/span>Franceschelli<\/span> et<\/span> al. (1989), and pressures<\/span> over<\/span> 0.9 GPa<\/span> by<\/span> Carosi<\/span> & Palmeri<\/span> (2002) for <\/span>the metamorphic<\/span> peak<\/span><\/span>.<\/p>\n","modified":"2018-09-03T17:41:07","color":"","icon":"","noDetails":false,"noInteraction":false,"image":"https:\/\/outcropedia.tectask.org\/wp-content\/uploads\/2018\/08\/ky-2-1024x1024.jpg","taxonomy":{"webmapp_category":[234]},"accessibility":{"mobility":{"check":false,"description":""},"hearing":{"check":false,"description":""},"vision":{"check":false,"description":""},"cognitive":{"check":false,"description":""},"food":{"check":false,"description":""}},"locale":"it","source":"https:\/\/outcropedia.tectask.org\/wp-json\/wp\/v2\/poi\/5745","wp_edit":"http:\/\/outcropedia.tectask.org\/wp-admin\/post.php?post=5745&action=edit","web":"https:\/\/outcropedia.tectask.org\/poi\/kyanite\/","addr:street":"","addr:housenumber":"","addr:postcode":"","addr:city":"","contact:phone":"","contact:email":"","opening_hours":"","capacity":""},"geometry":{"type":"Point","coordinates":[9.579414000000043,40.6018154]}}