TY  - JOUR
T1  - Mineral Chemistry and Temperature Determination of Skarn
Formation in Dezg Area, Southwestern of Hajiabad, North of Birjand
AU - Esmaeili, Zohreh AU - Fotohirad, Gholamreza AU - Hossein Yousefzadeh, Mohammad 
JO  - Online Journal of Earth Sciences
VL  - 11
IS  - 1
SP  - 1
EP  - 9
PY  - 2017
DA  - 2001/08/19
SN  - 1991-7708
DO  - ojesci.2017.1.9
UR  - https://makhillpublications.co/view-article.php?doi=ojesci.2017.1.9
KW  - Skarn
KW  -garnet
KW  -prograde metamorphism
KW  -retrograde metamorphism
KW  -Sistan suture
AB  - The study area is located in North of Dezq village in southwestern of Hagiabad. Mineralogical and
geochemical investigations is showing two main stage of prograde and retrograde metamorphism in formation
of skarn in study area. In prograde stage has formed skarn with anhydrous silicate-calcium mineral assemblage
(andradite-grossular and diopside-hedenbergite) in temperature range of 328-599° which has similar composition
with garnets from Cu-Fe and Au skarns. In retrograde stage, a part of these anhydrous silicates are affected by
retrograde metamorphism and changed to hydrous and anhydrous silicate minerals with less calcium (epidote,
tremolite-actinolite) and finally hydrous and anhydrous calcium assemblage has altered to fine grain minerals
including chlorite, calcite, quartz and clay minerals in temperature range of >300°.
ER  -