eprintid: 2010
rev_number: 13
eprint_status: archive
userid: 2
dir: disk0/00/00/20/10
datestamp: 2017-09-20 07:42:16
lastmod: 2017-09-20 08:25:44
status_changed: 2017-09-20 07:42:16
type: book_section
metadata_visibility: show
creators_name: Mäki, Timo
creators_name: Imaña, Marcello
creators_name: Kousa, Jukka
creators_name: Luukas, Jouni
title: The Vihanti-Pyhäsalmi VMS Belt
subjects: O
subjects: RFi1
subjects: SMU
divisions: IP1
full_text_status: none
abstract: The Vihanti-Pyhäsalmi belt contains the most important volcanogenic massive sulfide (VMS) deposits in
Finland. The volcano-sedimentary host rocks belong to a 1.93–1.92 Ga island arc that occurs along the
northwestern parts of the Raahe-Ladoga shear complex. The stratigraphy in the region is divided into two
units, a lower bimodal volcanic unit conforming to the Pyhäsalmi group and an upper volcano-sedimentary
association defined as the Vihanti group. The U-Pb zircon ages of the two groups are similar.
The Vihanti-Pyhäsalmi belt hosts two large VMS deposits, Pyhäsalmi in the Pyhäsalmi group and Vihanti in
the Vihanti group, as well as a number of small sulfide deposits located around them. The Pyhäsalmi
deposit is hosted by rhyolitic and basaltic volcanic rocks, contains 75.7 Mt of pyritic mineralization grading
0.9% Cu, 1.9% Zn, 0.4 g/t Au, and 14.1 g/t Ag, and hosts the only currently producing mine (2014) in the
belt. The Vihanti mine operated from 1954–1992, producing 28 Mt at 5.12% Zn, 0.48% Cu, 0.36% Pb, 25
ppm Ag, and 0.49 ppm Au. The Vihanti deposit and three minor satellite mineralizations are hosted in a
sequence dominated by intermediate and felsic metavolcanic rocks.
date: 2015
date_type: published
volume: 7
publisher: Elsevier
pagerange: 507-530
id_number: doi:10.1016/B978-0-12-410438-9.00020-0
isbn: 978-0-12-410438-9
book_title: Mineral Deposits of Finland
editors_name: Maier, Wolfgang Derek
editors_name: Lahtinen, Raimo
editors_name: O'Brian, Hugh
official_url: http://doi.org/10.1016/B978-0-12-410438-9.00020-0
access_IS-EPOS: limited
owner: Publisher
citation:   Mäki, Timo and Imaña, Marcello and Kousa, Jukka and Luukas, Jouni  (2015) The Vihanti-Pyhäsalmi VMS Belt.   In:  Mineral Deposits of Finland.   Elsevier, pp. 507-530.  ISBN 978-0-12-410438-9