PorterGeo
SEARCH  GO BACK  SUMMARY  REFERENCES
Shameika

Russia

Main commodities: Mo
Our International
Study Tour Series
The last tour was
OzGold 2019
Our Global Perspective
Series books include:
Click Here
Super Porphyry Cu and Au

Click Here
IOCG Deposits - 70 papers
All available as eBOOKS
Remaining HARD COPIES on
sale. No hard copy book more than  AUD $44.00 (incl. GST)
Big discount all books !!!


The small Shameika porphyry molybdenum deposit is located on the eastern margin of the Adui composite granitic pluton, near Malyshevo, 55 km north-east of Ekaterinburg ( Yekaterinburg ) in the Urals region of Russia.

A number of polymetallic and emerald deposits are found along the southern and eastern exocontact zones of the Adui granite which comprises a high K, biotite-orthoclase granite phase and a two mica microcline granite enriched in Rb, Li and Cs.   The pluton is intruded along the contact between Precambrian migmatites and biotite orthogneisses to the west and Palaeozoic volcanosedimentary rocks to the east.   The main Adui pluton and adjacent Palaeozoic volcanics and sediments are intruded by the smaller 6x2 km Malyshevo leucogranite stock which hosts the Shameika porphyry molybdenum deposit.   It is composed of albite-oligoclase, latticed microcline, quartz, biotite and muscovite and is enriched in fluorine in the vicinity of the molybdenum mineralisation.

The deposit occurs as a 1200 x 200 m stockwork of ore veinlets.   Faulting has offset the leucogranite to produce a concealed repetition overlain by amphibolite schist which has been altered to a banded biotite-epidote and calcite rock cut by a dense network of granitic dykes.   Mineralisation can be traced to a depth of 220 to 280 m.   The stockwork is hosted 75% by the leucogranite as a dense network of molybdenite bearing quartz veins and 25% by the exocontact hornfels as thin molybdenite and pyrite bearing fluorite-quartz veinlets.

Both hosts are strongly altered.   The leucogranite has been altered to a pink colouration due to an increase in K feldspar and albite, and quartz depletion.   Fine grained molybdenite occurs as banded aggregates of parallel flakes concentrated with pyrite near the margins of the veinlets in both hosts, .

A resource has been outlined of approximately:   54 Mt @ 0.08% Mo.

For detail consult the reference(s) listed below.

The most recent source geological information used to prepare this summary was dated: 2002.    
This description is a summary from published sources, the chief of which are listed below.
© Copyright Porter GeoConsultancy Pty Ltd.   Unauthorised copying, reproduction, storage or dissemination prohibited.


  References & Additional Information
   Selected References:
Mao J, Du A, Seltmann R, Yu J  2003 - Re-Os ages for the Shameika porphyry Mo deposit and the Lipovy Log rare metal pegmatite, central Urals, Russia: in    Mineralium Deposita   v38 pp 251-257


Porter GeoConsultancy Pty Ltd (PorterGeo) provides access to this database at no charge.   It is largely based on scientific papers and reports in the public domain, and was current when the sources consulted were published.   While PorterGeo endeavour to ensure the information was accurate at the time of compilation and subsequent updating, PorterGeo takes no responsibility what-so-ever for inaccurate or out of date data, information or interpretations.

Top | Search Again | PGC Home | Terms & Conditions

PGC Logo
Porter GeoConsultancy Pty Ltd
 International Study Tours
     Tour photo albums
 Ore deposit database
 Conferences & publications
 Experience
PGC Publishing
 Our books  &  bookshop
     Iron oxide copper-gold series
     Super-porphyry series
     Porhyry & Hydrothermal Cu-Au
 Ore deposit literature
 
 Contact  
 What's new
 Site map
 FacebookLinkedin