’ 
ae for the Miltalie albitite 
pp. 
330 
and Pearce (0) describe albitites from the Northern Urals, 
where they are associated with gabbro. In ber. rocks the 
albite is Cave aped intergrown with a little quart 
Tt is to be noted that both per occurrences are associated 
with more or less basic rocks, e.g., in the Sierra Nevada with 
serpentine, and in the Northern Urals with gabbroid masses. 
Australia rocks of this nature have been found in 
Western and South Australia. Maitland) described a 
pegmatite from the Pilbarra region. The constituents appear 
to be albite, quartz, garnet, and cassiterite. rom Eyre 
i L. 
being eed in long prismatic c 
association of the Western poerah an albitite is with 
granite, whilst the Eyre Peninsula rock is intrusive into 
Mss dup ue sedimentary beds, but granites are developed 
at hand 
A partial analysis of an albitite from Cape Willoughby 
has been made. This is tabulated below, and for comparison : 
the Apress is of a number of other aibitite rocks are listed 
with it 
m er KEW, Unde. HL Pitera. IV. Wyre Pub. oraiiio 
Sid, 66°54 “36 13 68:39 
TiO n.d. 0°23 0:07 0°31 n.d. 
1,0, n.d. 18°85 18:74 19:92 n.d. 
Fe,0, n.d. 0:91 s 0°60 n.d. 
FeO n.d. os 115 0-19 n.d. 
MnO n.d. ad 0°45 n.d. 
MeO 0-77 153 0°54 u.d. 
CaO 0°43 1:09 0:39 0°57 0°65 
Na,O 10°28 10°84 10°22 10°83 11°22 
K.Ó R9 048 0°07 0:21 
H,O nd. 117 0°03 0°44 0'45 
FO u.d. a ye 0°09 n.d. 
I. H. W. Turner: 17th Ann. Report U.S.G.S., 1895-6, p. it 
II. Dupare et Pearce: Compt. Rendu., 140, 1905, 1614. 
IIT. A. Gibb Maitland: Bull. 40, Geol. Surv. W. Austr., p. 100- 
IV. R, L. Jack3): Bull. 3, Geol. Surv. S. Austr., p. 16. 
V. C. Willoughby albitite. 
10 Dupare et Pearce: Com mpt. Rendu. - 140, 1905, 1 
en An Gibb Maitland: Bull. No. 40, Geol Surv. W. vue n 
do R L. Jack: Bull. No. 3, Geol. Surv. S. Austr., pp. 15, 16. 
(13 The abnormally high content of Na,O (13485) report 
casts suspicion on its reliability. 
