There are different ore deposits in Central Alborz, which are distributed from east to west. Except for the Emaft fluorite ore deposit, other ore deposits in the upper and middle members of the Elika formation belong to the Triassic age and are covered by Palan evaporated formation. The genesis of these deposits is considered diagenetic to epigenetic. Fluorite reservoirs filled with faults or karst zones (open space filling) originate in epigenetic. Layers and lenses are supposed as digenetic. This fluorite, a double polished thin section (polished wafers), was prepared, and its salinity and homogenization temperature of fluid inclusion were tested using Linkham Tm 600 model. Despite the geographical distribution of ore deposits, the results showed that their density is the same everywhere, but redeposit with digenetic or digenetic characteristics showed lower salinity. According to the salinity and homogenization temperature characteristics, these ore deposits are classified in Irish to MVT type.

1. S. Alirezaee, “Investigation of stratigraphy & genesis of F, Ba & Pb deposits in Eastern central Alborz,” Unpublished master thesis, University of Tehran, Tehran, Iran, 1987.
2. H. L. Barnes, Geochemistry of Hydrothermal Ore deposits, New York, NY: John Wiley & Sons, 1997.
3. K. C. Dunham, “Ore genesis in the English Penines, a flouritic subtype,” in International Conference on Mississippi valley Type Lead-zinc Deposits, University of Missouri, Rolla, Missouri, 1983.
4. H. Gorjizad, “Geology, mineralogy, facies analysis and the genesis of Pachi-Miana deposit, East central Alborz,” Unpublished master thesis, Tarbiat Modares University, Tehrean, Iran, 1995.
5. E. Roedder, “Fluid inclusion evidence on the genesis of ores in sedimentary and volcanic rocks,” In Handbook of Stratabound and Stratiform Ore Deposits, K. H. Wolf, Ed, Amsterdam, Netherland: Elsevier, 1976, pp. 67-110. https://dx.doi.org/10.1016/b978-0-444-41402-1.50007-2
6. E. Roedder, Fluid Inclusions, vol. 12. P. H. Ribbe, Ed. Washington, DC, US: Mineralogical Society of America. https://dx.doi.org/10.1016/b0-12-227410-5/00251-9
7. I. M. Samson and M. J. Russell, “Genesis of the silvermines zinc-lead-barite deposit, Ireland; Fluid inclusion and stable isotope evidence,” Economic Geology, vol. 82, no. 2, pp. 371-394, 1987. https://dx.doi.org/10.2113/gsecongeo.82.2.371
8. A. Shariatmadar, “Geology and genesis of Shesh roodbar fluorite deposit,” Unpublished master thesis, Tarbiat Modares University, Tehran, Iran, 1998.
9. T. J. Shepherd, A. H. Rankin and D. H. M. Alderton, A Practical Guide to Fluid Inclusion Studies, London, UK: Blackie, 1985.
10. H. Tabasi, “Structural analysis of Sheshroodbar area,” Unpublished master thesis, Tarbiat Modares University, Tehran, Iran, 1996.
11. G. Vahabzadeh, A. Khakzad, I. Rasae and M. Mousavi, “The study of sulfur isotopes of galena and barite in fluorite ore deposits of Savad koh Region,” Journal of Sciences, vol. 18, no, 69, 2008.
12. F. Vahdati Daneshmand, “New findings on the upper contact of the Elikah Formation and introduction of the Paland succession,” Unpublished Internal Report Geological Survey, Tehran, Iran, 1982.
13. J. J. Wilkinson, “Fluid inclusions in hydrothermal ore deposits,” Lithos, vol. 55, no. 1, pp. 229-272, 2001.

G. Vahabzadeh and S. H. Zali “Determination of ore forming fluids density of fluorite ore deposits of Central Alborz,” International Journal of Applied and Physical Sciences, vol. 2, no. 2, pp. 33-36, 2016.