Dear all,
maybe you could use the term skarnoid, indicating a
rock containing calc-silicates such as wollastonite, piroxene
(diopside-hedenbergite), garnet (grossularite-andradite), epidote, scapolite. I
think the term *skarnoid* does not have a genetic significance, but it is a
general term indicating calc-silicate rocks similar to skarns but without
implying necessarily a metasomatic process.
----- Original Message -----
Sent: Thursday, December 19, 2002 1:30
PM
Subject: Calc-silicates
Dear all,
Yardley in the book "An Introduction to Metamorphic Petrology" pag. 126
writes.........
....it becomes convenient for the description of
metamorphosed calcareous sediments
to divide them into two
categories: marbles in which carbonates are abundant; and calc-silicates
with little or no carbonate.
Can anyone suggest me if a
rock made up of calcite ( 30%) , and wollastonite+diopside+
grossular+ quartz (70%) can be classified as
calc-silicate?
Thanks in
advance,
Marcello Franceschelli
_________________________________________
Prof. Marcello Franceschelli
Dipartimento di Scienze della
Terra
Università degli Studi di Cagliari
Via Trentino, 51
I-09127
Cagliari
Italy
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Tel: +39 -070 6757713 Fax: +39 -070 282236
____________________________________