Carbonate-orthopyroxenites (sagvandites) from Troms, northern Norway

Carbonate-orthopyroxenite lenses from the Neoproterozoic Gerf ophiolite, South Eastern Desert, Egypt: The first record in the Arabian Nubian Shield ophiolites

“…The Gerf carbonate-orthopyroxenites exhibit neither xenoliths of associated rocks nor diffuse compositional banding and/or cross-cutting veinlets of later origin, contrary to their counterpart in the type locality, Troms, Norway (e.g. Schreyer et al, 1972).…”

“…The rocks are overall similar in texture and mineral assemblage to their counterpart in the type locality, Troms, Norway (e.g. Schreyer et al, 1972), except for the lower orthopyroxene/carbonate ratio and the absence of phlogopite in the former.…”

“…The carbonate-orthopyroxenites form rootless slices and/or lensoidal masses of variable thickness and length, like their counterpart in the type locality, Troms, Norway (e.g. Schreyer et al, 1972). They are too small to map, approximately 5-40 m long and 3-5 m wide.…”

“…Reitan and Geul, 1958;Randall, 1960), or to regional metamorphism accompanied by CO 2 -metasomatism (e.g. Schreyer et al, 1972;Evans and Trommsdorff, 1974).…”

“…We would like to use the term carbonateorthopyroxenite instead of sagvandite because of the ambiguity of the latter term (e.g. Schreyer et al, 1972).…”