UHRY

WALBECK

Granulometry

Median (Md, m)

0.13 - 1.68

Sorting σI

0.11 - 2.05

Skewness (SKI)

−0.38 - 0.59

Light minerals

Grain Wt-%

Quartz

94 - 100

99.6 SiO₂ (Qz, Kaol.)

Feldspar

0 - 6

0.05 Fe₂O₃ (Limonite)

Mica

0 - 1

0.17 Al₂O₃ (Kaol.)

Glauconite

0 - 4

Heavy Minerals

Grain WT-%

Zircon

7.0 - 77.1

0.4 - 19.8

Tourmaline

3.3 - 42.4

31.3 - 61.1

Rutile

2.7 - 37.5

0.4 - 16.7

Sphene

0 - 1

Brookite

0 - 4.5

Anatase

0 - 4.9

Andalusite

1.3 - 59.6

24.4 - 40.3

Epidote, Clinozoisite

0 - 4.3

0 - 0.6

Hornblende

0 - 5.0

-

Garnet

0 - 7.9

0 - 0.2

Staurolite

0.3 - 4.3

1.8 - 4.0

Cyanite

0.6 - 6.6

1.1 - 5.9

Topas

-

1.7 - 2.9

Apatite

0 - 4.9

0 - 0.1

Clay Minerals

Kaolinite, (illite)

Kaolinite, (illite)