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Table 1 Elemental composition of talc and vermiculite

From: Synthesis of cyclic carbonates from epoxides and carbon dioxide catalyzed by talc and other phyllosilicates

Entry

Element expressed as oxide

Talc composition [wt.%]

Vermiculite composition [wt.%]

1

SiO2

54.28

42.98

2

Al2O3

2.48

14.24

3

Fe2O3

6.07

7.13

4

MgO

29.35

21.35

5

CaO

1.22

2.06

6

MnO

0.26

0.18

7

K2O

0.12

0.92

8

Na2O

0.25

0.48

9

Cr2O3

0.08

0.04

Sum*

94.1

89.4

  1. *Sum excluding volatiles such as water.