| More


Views: 135 Downloads: 118
A. Çina
A. Çina


Ultramafic massif of Bulqiza belongs to Eastern Jurassic Albanian ophiolite belt of IAT-BSV- type. This massif is the most important chromite-bearing ore. The mantle ultramafics have extremely refractory nature. This is due to the high partial fusion of upper mantle which is depleted in CaO and Al2 O3 . The chromitite is situated to different parts of ultramafic pile, from bottom Cpx harzburgites up to massive dunites and cumulate ultramafic but the mainly chromite potential belongs to mantle harzburgite –dunite level and to transition dunites partly. The chromite is chiefly of Cr-rich metallurgical type. The atomic ratios of chromite , Fo of olivine and some physical properties of them vary according to the chromitite setting and reflects the evolution of Ol-Sp equilibrium process depended of the chromite concentration, from baren dunitic lenses towards dunite envelops of the ore bodies and the interstitial and inclusions of olivine within chromite grains. Two particular chromite deposits are the Bulqiza- Batra tabular folded ore body and Shkalla, pencil –like ore body.


Chromitite mineralogy; ultramafic; massif Bulqiza Albania;

Full Text:



Alliu, I., Beccaluva, L., Çina, A., Coltorti, M., et al ., 1994. The Skanderbeg and Bulqiza mafic- ultaramafic

ophiolitic complexes and their relationship with chromititic ore deposits Working group meeting

of IGCP project No 256- fild trip B).Ofioliti, 19(1),. 27 – 55.

Auge, T. and Johan Z., 1988. Comparative study of chromite deposits from Troodos, Vurinous, North.

Oman and New Caledonia ophiolites .Mineral Depozits, ed by Boisson as and P.Omenetto, Springer

-Verlag Berlin. 267-288.

Burgath ,K. P., Krauss, U., Mohr,M., 2002 . Chromium ores and plantinum – group. element. occurrences

in Europe and Turkey: Inventory , evolution and possibilities Chron. Rech . No. hors serie,, 55-77..

Çina, A., 1986. Some physical proprieties of the chromitite chromespinels of the ophiolitic ultrabasiic massif

of Bulqiza, Albania.Ofioliti, 11, Nr.1, 51.

Çina, A., Caslli, H. and Goci, L., 1986. Chromites in the ophiolites of Albanides. In:”Chromites”.UNESCO’S

-197project, Metallogeny of ophiolites. Theophrastus Pub.S.A Athens, 107-126.

Dick, H.J.Band, Bullen,T.,1984 .Chromian spinel as a petrogenic indicator in abisal and alpine-type peridotites

and spatially associated lavas. Contribution to Mineralogy and Petrology, v.86, 54-76.

Dietrich, V.,oberhansli,R.and Marcolli ,I. 1987. A new occurrence of boninite from the ophiolitic mélange

in the Pindus-subpelagonian zone.Ofioliti ,12,83-90.

Economou, M., Dimou, E., Economou, G., Vacandios, I., Grivas E., Rassios, A. and Dabitzias, S.,

Chromite deposits of Greece. In : Chromites UNESCO’S -197project, Metallogeny of ophiolites.

Theophrastus Pub. S.A Athens, 129-159.

Economou, M. 1984. On the chemical composition of the chromite ores from the Chalkidi peninsula,.

Greece ofiolitu, 9(2), 123-134.

Gartzos, E., Migiros, G.and Parcharidis, I. 1990. Chromites from ultramafic rocks northen Evia (Greece)

and their geotectonic significance. Scheiz Mineral. Petrogr. Mitt, 70, 301-307.

Georgiu, E and Xenophontos, C. 1990. Chromite occurrances and associated plutonic rocks in the Akapnou

Forest. In :Ophiolites,oceanic crustal analogues.Proc.of the Symp”Troodos1987”. Nicosia

Cyprus. 585-592.

Karaj. N., 1992. Repartition des platinoides , des chromites et sulfures dans le massif de Bulqiza,. Alba-

XLIII, No 5 – 2586

nie. Incidence sur les proccesus metallogeniques dans les ophiolites. These, Univ d’Orleans, pp.400.

Kodra, A., Gjata, K. and Bakalli, F., 1995. The Mirdita oceanic basin from rifting to the closure. In::

Workshop on Albanian ophiolites and related mineralizations. Documents du BRGM. 244. Editions

BRGM, France 9-26.

Konstantopoulou, G. and Economou, M-Eliolopoulos 1990. Geochemistry of the Vourinos chromite ores,

Greece. In: Ophiolites, oceanic crustal analogues. Proc. of the Symp”Troodos 1987”. Nicosia,

Cyprus. 605-613.

Nicolas, A., Bondier, F. and Meshi, A., 1999. A slow spreading accretionin the ophiolite of. Mirdita (Albania).

Jurnal of Geophysical Reseacher. 104, nr.87, 15155-15167.

Ohnenstetter, M., Karaj, N., Neziraj, A., Johan, Z., Çina, A. 1991: Le potentiel platinifere des ophiolites:

Mineralizations en elements du groupe du platine (EGP) dans les massifs de Tropoja et Bulqiza, Albanie.

C.R. Acad. Scie. Fr., v .313, ser. II.201-208.

Panayiotou, A., Michaelides, A.E. and Georgiou, E., 1986. The chromite deposits of the Troodos. Ophiolite

complex, Cyprus. Chromites UNESCO‘S IGCP.197 Project Metallogeny of ophiolites.

Theophrastus Pub. S.A Athens. 161-198

Shallo, M., Çina, A. and Turku, I., 1995. Outline of metallogeny of the Albanian MOR and SSZ- type ophiolites.

In: Workshop on Albanian ophiolites and related mineralization. Documents du BRGM 244.

Editions BRGM, France, 27-46.


  • There are currently no refbacks.

Copyright (c) 2017 A. Çina

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.