Different Localities of Potassium-Rich Silica-Undersaturated Igneous Rocks and Their Silica-Rich Variants - Origin of Potassium-rich Silica-deficient Igneous Rocks - page 114

147 148

Locality Map
New South Wales

Byrock

31

31

2

Leucite-bearing lavas
Cainozoic sediments
Palaeozoic sediments and Volcanic rocks
Siluro-Devonian granitic rocks

32

Localities
1BQ 4LC 7TUL 10FGH
2CPT5BUR8BY ,BYL11GR

32

Nymogee

miles

20 0 20 40

20 0 2040 km

N

33

33

River

Candobolin

Lake
Cargelligo
5

6

Lake
Cowal

Burcher

9
Naradhan

Ungarie

10

West
Wyalong

Rankin
Spring

34

Barmedman

34

Young

11
Griffith

Borellan

Yenda

Temora

Harden
12

147 148

Fig. 4.7 Distribution of leucite-bearing lavas in New South Wales, Australia (after Cundari 1973)

Although Cundari termed these rocks as leucitities, on the basis of modal min-
eralogy, some of the rocks at Byrock with 10 vol% phlogopite and K-richterite, may
be termed as lamproites (BQ-5, BQ-7). Some of the rocks occurring at Begargo Hills
(BEH-A, B and C) and Condoblin (CND-4) may be called phonolites