ISSN: 2776-0979, Volume 3, Issue 4, April., 2022 169
Table1
Signs of potential mineralization of rocks of alkaline basaltoids
and lamprofir formation
Typomorphic characteristics of gold-tungsten
mining of the lower tier of the Yachton deposit
Geochemical specialization
Rock formations of alkaline basaltoids and lamprophyres at the
boundary of the yacht area are characterized by the presence of
a number of elements (Au, Ag, W, Mo, Se, Te, Bi, As, Sb, Re, Hf)
that have higher amounts than clark in virtually all types of
dyke products.
The geochemical sequence (Te-Se-Au-Bi-As-Ag-Sb-Re-Hf-W-
Mo) of the rate of accumulation of basic elements in ore-
generating magmatic products of the formation of alkaline
basaltoids and lamprophyres indicates that they have
geochemical specialization predominant in gold and rare metal
mining sufficiently clear.
The typomorph Au, W, Bi, Te, As, Ag, Se, Mo, Su,
Sb is a geochemical association for gold-tungsten
ore of the lower tier of the Yachton deposit.
The main minerals of the sulfide part of the ore are
pyrite and pyrrhotite.
Amount of mixed elements (g/t): in pyrite – Au -
22,9; Ag - 51; , As - >4000; Te - 47; Se - 42; and Bi
- 1600; pyrrhotite – Au - 3,5; Ag - 3,5; As - 85; Te -
7,3; Se - 17; and Bi - 400.
Mineral- accessor specialization
Basic
paragenetic
mineral
association
of
mineralization
The potential mineralization of gold is confirmed by the
accumulation of natural gold grains and sawdust found in
different rocks of the formation in untouched, unchanged
species by metasomatic alteration processes.
In addition, xenolites with natural gold carbonated peridotites
were detected, as well as pyroxene-porphyry trachybasalts
containing brecciated and ultrabasic xenolites. Natural gold is
associated with sheelite, molybdenite, cinnabar, magnetite,
galena, sphalerite, pyrite, fluorite, chalcopyrite and graphite.
The specialization of alkaline basaltoids - rocks of the formation
of lamprophyres in tungsten is confirmed by the presence in
them, as well as in carbonated pyridotites (xenoliths), the
accelerator sheelite.
For tungsten - albite-sheelite.
For gold - tetradimite-tellurovismutite, gold -
silver, gold-hessite and pyrite-arsenopyrite.
Mineral forms of gold are natural tellurides in
association with natural gold and natural silver,
pyrite, pyrrhotite, ores, arsenopyrite.
Features of metasomatosis
In xenoliths, hyperbasites are characterized by highly
carbonated listvenites and are described as a metasomatic type
resulting from the treatment of magmatic solution in the
deeper parts of the igneous chamber with high-potassium
mantle fluids of carbon dioxide. In addition to the high
concentration of potassium, the fluid was significantly
saturated with gas and water.
Integrated siliceous metasomatosis, which brings
Ca, Si, Mg, Fe to the periphery.
For
metasomatites
formed
along
the
aluminosilicate substrate, which has several
modifications, the constant presence of calcite in
practice is characteristic.
The presence of thin veins of brownish-black
symbolic substance (anthraxolite type), which
records the arrival of juvenile carbon in
metasomatites.