Record details

Title
    Rock-forming minerals of lamprophyres and associated mafic dykes from the Krušné hory/Erzgebirge (Czech Republic)
Author
    Holub, F. V.
    Lang, Miloš
    Novák, Jiří Karel
    Pivec, Edvín
    Štemprok, M.
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Journal of the Czech Geological Society/Časopis České geologické společnosti
Vol./nr.
    Roč. 47, 1-2
Pages
    s. 23-32
Year
    2002
Notes
    Projekt: GA205/01/1127, GA ČR
    Projekt: KSK1012601, GA AV ČR
    Rozsah: 10 s.
Subject category
    greisenization
    Krušné hory/Erzgebire
    lamprophyres
Keyword
    Associated
    Czech
    Dykes
    Hory/Erzgebirge
    Krušné
    Lamprophyres
    Mafic
    Minerals
    Republic
    Rock-forming
Abstract (in english)
   The chemistry of mica, amphibole, feldspar, chlorite, i.e. minerals with great flexibility of ionids replacement and of accessories is related to kersantite, minette, spessartite and associated diorite to tonalite porphyry dykes founed in the Jáchymov and the Krupka ore districts. Some mica flakes close to phlogopitic composition, brown hornblendes rich in Ti and some accessory minerals (apatite, some varietes of spinel) may reflects primary magmatic composition. Olivine is totally replaced by pilitic pseudomorphs and by biotite-rich magnesiohornblende to actinolite. Most samples are affected by secondary biotitization, instead common kersantite and minette dykes from the Krupka ore districts.
Contributor
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
    U
Import date
    8. 8. 2012