Table 5. Microprobe analytical compositions of anhydrite.

[Values are in weight percent]


Rock type
Sample

Dacite
Pt31

CaO

42.68

SrO

.23

BaO

.07

Na2O

.01

K2O

.00

FeO

.03

SO3

57.22

     Total

100.24


This page is <https://pubs.usgs.gov/pinatubo/bernard/table5.html>
Contact: Chris Newhall
Last updated 03.29.99