Moreover, the emplacement of the Logrosan granite has produced a superimposed contact metamorphism characterized by an inner biotite-tourmaline hornfel
zone, an intermediate zone of micaceous spotted slates, and a transition zone of recrystallized slates and some metaquartzite levels (Fig.
The oxidized sulfide mineralization is associated with quartz veining, vein stockwork, and quartz healed breccia hosted in hornfels
altered clastic sediments.
The drill program is expected to confirm the continuity and shape of the high grade gold mineralization below the proposed pit that is hosted in the complex breccia and it will also explore the gold mineralization indications at depth hosted in hornfels
skarn, typical of the Guerrero Gold Belt.
2) and has sharp and discordant contacts, with hornfels
formation, which suggests a shallow-crustal emplacement depth.
A detailed study of morphology and chemistry of garnet crystal with suggestion of new subdivisions: data from pelitic schists, hornfels
and aplites of Hamedan Region, Iran.
The metamorphic rocks occurred around Alvand granitic rock masses are pelitic hornfels
In the study area lithological units is outcrops the second to fourth periods, which from old to new are as follows: phyllite, ouartzite, paragneiss, marble, shell, sandstone with tufa, volcanic rocks, crystalline limestone locally with fosolina, metamorphic volcanic and tufa, cherty limestone, phyllite, metamorphic quartzarenite, micaschist, metadolomite, amphibolite, limestone, shale and sandstone, schist hornfels
, orthogneiss, granodiorite, oput rock, shale and phyllite sandstone, granite, granodiorite, diorite, dolomitic lime, radiolarit breccia, rodist lime, orbitoline, radiolarat, black and blue marl with limestone, alluvium.
The unit conformably overlies graphitic, sulphide-rich slate and hornfels
of the Cunard Formation.
Drill hole GHD007 is oriented toward the NE, and was designed to target the NE edge of Hobbs Pipe 1 near the surface, and then continue on to test the geology beneath historical highly anomalous hornfels
metasediment hosted mineralisation.
Not a vestige of mineralization remains in this narrow trench (Figure 13) that slices through highly metamorphosed cherty limestones and shales now altered to marbles, phyllites, and hornfels
the most favoured material among the Nepean pebbles for the large implements is hornfels
, although a wide range of other stones is present'.
Wide zones of low grade gold (Au) and silver (Ag) mineralization, accompanied by widespread propylitic alteration, biotite hornfels
and silicification were intersected in a number of drillholes at spatially separate targets including Mabel Jenny, Mabel Jenny North and the Prince of Wales (Table 1).