Antimony mineralization occured in Hamedan district
(Faghireh) which is related to Alvand Granitoids. The mineralization
occurcd as a series of veins. Thickness of veins are variable and reach
up to 0.7m. The veins are emplaced along high angle faults. These faults
acted as a pathway for migration of are nuids. Veins are composed of
stibnite, pyrite, realgar and orpiment with quartz as a gangue. The
textures of veins are open space filling, however brecciations also
occured. Monzogranites, which formed the main part of Alvand pluton,
is the host of quartz - stibnite veins. Monwgranites are composed of
quartz, sodium plagioclase (oligoclase), orthoclase, biotite and
sometimes muscovite.
The veins arc composed of 30.5% antimony , 0.83 ppm gold and 498
ppm arsenic. Based on geochemical studies, Sb, Au, AS, Ag, Hg, Sn, Ni,
Co and Cr contents of host rocks are much higher than the world 's
average monwgraniets and have probably anomalies. Spiderdiagrams
show an identical pattern for host rocks and veins, which strongly
suggests that these veins are cogenetic with the intrusive rocks
(monzogranite).
1n summary, with all geological evidences In the region, it can be
concluded that the mineralization is probably occured in the epithermal
type.

Mehdiabad Zn-Pb-Ba deposit is located 110km south-east of Yazd, in the Central Iran structural zone. The stratigraphic succession consists of three sedimentary formations of lower Creataceous age. The Sangestan formation,i.e, the lowest unit of shale and siltstone with calcarenitic interbeded layers. This unit is overlain by ankeritic massive dolomite and dolomitic limestone of Taft formation. The Abkouh formation at the top is composed of cherty or clayey limestone with conglomeretic intercalation, lenses of massive reef limestone and calcareous shale. The structure of orebody shows a half-graben with a vast N-S synform being complicated by the presence of polyphase faults. The main normal fault is Tappeh Siah fault, suggested to have been active during and after the period of sedimentation. Major economic minerals are sphalerite, galena and barite with minor pyrite, chalchopyrite in sulfide zone. Oxide ores contain smithzonite, hydrozincite, hemimorphite and cerussite. Mineralization occurs in stratiform-lenticular orebodies and concordant with host rocks. Also orebodies showing laminated, disseminated, open space filling, karst filling, colloform and botryoidal textures.

Dehnow tonalite in west of Mashhad, NE Iran, is one of the oldest pluton in Mashhad Granitoied Complexes. This pluton cut by four systematic fracture sets. Among them, two sets show right lateral strike separation. Set A consists of parallel right lateral strike slip faults with a minor reverse slip component and Set B includes right lateral strike slip faults with a small component of normal slip. Other set is formed between faults in set A. Tonalite is deformed into mylonite in fault cores. Study of microstructures and dynamic recrystallization of quartz grains in these mylonites indicates that the formation of mylonites have taken place under 410-430 (ºC), 42.54 - 59.31(Mpa) differential stress and 21.27-29.65(Mpa) maximum shear stress. The strain rate in this deformation is-. Field observations and study of microstructures revealed that these fault sets have formed during renewed slip on the earlier formed extensional joints and their asymmetric fringe joints probably during Late Cimmerian orogeny.

Galali orebody is located in Sanandaj-Sirjan zone in west of Iran in the Karamkhani slops in Almogholagh mountains. The main ore is magnetite association with hematite, goethite, secondary limonite, malachite and pyrite. This orebody is located on north Galali fault; mineralization is made by fault movements in this orebody. Three types of ores have been seen in the Galali orebody as below: Type I: this ore is made of compact, high density and high grad magnetite. Fine grain, subhedral to unhedral pyrite has found in this type as minor mineral. Pyrite is dispersed in magnetite. Type II: this ore type are made of silicates, oxides and sulfides, this phase is injected in the   type I minerals. Type III: the hydrothermal goethite is the third type of ore in the Galali orebody. Skarn, epydotization, dolomitization and some argilic veins are alteration haloes around the orebody. Evaporatic origin is recognized for sulphur isotopes in this study.

The study area is located about 30km northwest of Kashmar, southwest of Keriz village and east of Siah Kuh mine. Based on field and mineralogical studies, the rocks are mainly polutonic, sub-volcanic and volcanic, aged Eocene. The carbonate unit, with Permian age, is exposed extensivelly in the area. The mineralization in the area appears as veins, lenses, massive and dissiminated forms. Vein and lens type mineralization are related to the fault zones. The main mineralization in the area is magnetite, which occurs mostly as veins, lenses and massive. Dissiminated forms are less abundant. Other mineral veins and lenses in the area are specularite, chalcopyrite, pyrite, hematite, malachite, quartz and carbonate. Weathering of hypogen sulfide minerals has generated huge surficial amounts of secondry minerals such of malachite. Tectonically, there are three types of fault in the area: normal, strike slip and thrust, trending mainly northwest-southeast. The vein mineralization- trend is the same as fault- trend. The strike slip faults have been responsible mostly in providing suitable spaces for the uplift and porefluid filling. The magnetite has formed hydrothermally in contact with limestone and intrusive bodies. The existence of copper positive anomalies, I type granitoides, as well as fault mineralization may be considered as an evidence to prove that the iron oxide deposit in the area is a member of Fe-oxide type.

Shelgerd area is located south of Mashhad, N.E of Iran, within Binalud Structural Zone. This region is affected by regional metamorphism, slate and phylite are the main metamorphic rocks of the area. Teriassic slate, phyllite, sandstone and Jurassic conglomerates crop out parallel to Sang bast- Shandize fault. Mineralization occurred as vein type, with trend of N65E to N50W with 75 degrees to the south west. In superficial zones slags are common. primary ores are quartz, pyrrhotite, chalcopyrite, galen, orpiment, realgar and secondary minerals are malachite, azurite, covellite, goethite, hematite, limonite and covellite. Stream sediment geochemical sampling method shows anomalities of Ag, Cu, Pb, Zn, Fe elements. In The heavy mineral samples, some mineral such as orpiment, realgar, gold, pyrite and cassiterite are recognized. Also, geochemical analysis conducted on the small rock samples from surface of gold veins and old tunnel show the amount of gold is about 4.424 ppm, silver 8.42 ppm, copper %4.4964, iron %1.4349, laed %0.6939, and zinc %0.2825. Chemical analysis of galena shows high concentration of Ag, Sb, Bi. Depends on the ratio of Sb/Bi, mineralization temperature is low to medium and epigenetic type. According to mineral galena, crystals are the primary type.