TY - JOUR
T1 - Composition of ilmenite and provenance of zircon in northern Brazil
AU - Knudsen, Christian
AU - Thomsen, Tonny B.
AU - Kalsbeek, Feiko
AU - Kristensen, Jeppe A.
AU - Vital, Helenice
AU - McLimans, Roger K.
PY - 2015/7/7
Y1 - 2015/7/7
N2 - The mineral ilmenite (FeTiO3) is an important component of
heavy-mineral placer deposits and constitutes the largest volume of
valuable mineral in such deposits. The minerals zircon (ZrSiO4) and rutile (TiO2), which occur in lower concentrations than ilmenite in the deposits, have a greater value per ton – c.
1100 and 900 $/ton respectively – compared to ilmenite that ranges from
100 to 200 $/ton depending on its composition. Other minerals such as
staurolite, sillimanite, amphibole and garnet are generally also present
in placer deposits, but are of minor or no commercial value and, e.g.
amphibole needs to be separated from the valuable heavy minerals which
adds to the production cost.
AB - The mineral ilmenite (FeTiO3) is an important component of
heavy-mineral placer deposits and constitutes the largest volume of
valuable mineral in such deposits. The minerals zircon (ZrSiO4) and rutile (TiO2), which occur in lower concentrations than ilmenite in the deposits, have a greater value per ton – c.
1100 and 900 $/ton respectively – compared to ilmenite that ranges from
100 to 200 $/ton depending on its composition. Other minerals such as
staurolite, sillimanite, amphibole and garnet are generally also present
in placer deposits, but are of minor or no commercial value and, e.g.
amphibole needs to be separated from the valuable heavy minerals which
adds to the production cost.
UR - http://www.scopus.com/inward/record.url?scp=84937027379&partnerID=8YFLogxK
U2 - 10.34194/geusb.v33.4515
DO - 10.34194/geusb.v33.4515
M3 - Article
SN - 2597-2154
SN - 1904-4666
SN - 1604-8156
VL - 33
SP - 81
EP - 84
JO - Geological Survey of Denmark and Greenland Bulletin
JF - Geological Survey of Denmark and Greenland Bulletin
ER -