MINERALS OF NEW ZEALAND. 275 
Muscovite, or Mica !!—Snowy Peak Range, Milford Sound, 
Charleston, Dusky Bay, Great Barrier Island, as a 
common constituent of mica schist, gneiss and granite. 
Mispicket ! —Milford Sound, Waipori, Malvern Hills, Colling- 
wood, Thames, associated with gold (Hector, Hutton, 
Cox). Analysed by Skey. 
Mo.tyspeEnitF !—Dusky Sound, as flakes in a gneiss rock 
(Docherty, 1880). 
Narrouitre !—Dunedin, in vescicular basalts (Hector); Bank’s 
Peninsula, in volcanic rocks (Haast); also in cavities 
of basalts from Dunedin (Hector) ; Mount Livingstone, 
Look-out Point, Whakahara. 
OpsIDIAN, or Voucanic Gtass ! !— Mayor Island, Bank’s 
Peninsula, Mount Eden, Taupo Island, associated with 
rhyolites and on the sides of trachyte dykes (Hochstetter, 
Hector). 
OuicocLasE !!—Mount Misery, Malvern Hills, Snowy-peak 
Range, in quartz porphyries (Haast, Daintree). 
OLIVINE, or CHRYSOLITE ! !—Mandamus district, Hurunui district, 
in dolerites (Liversidge, Hutton); Banks’ Peninsula, 
Chatham Islands, as grains in basaltic rocks (Haast) ; 
Saddle Hill, Milford Sound, in basaltic rocks (Hector, 
1862). 
Opa ! !—Mount Somers, Malvern Hills, inferior qualities only. 
Common Opal and Semt-opal | |—Malvern Hills, filling small 
cavities in quartz porphyries (Cox, Haast). 
fire Opal !|—Otago Peninsula, in tuffs, collected by Capi. 
Fram, determined by Skey. 
Opal Jasper | !—Portobello, Otago, in trachytic tufa (Liver- 
sidge). 
fitch Opal! '!—Dunstan, Rakaia Gorge, Harper’s Hill 
(Liversidge). 
Wood Opal, or Silicified Wood !!—Mount Somers, Canter- 
bury, Coromandel, occurs in tuffs and conglomerates 
and where silicious rocks are decomposing (Haast, 
_ Hochstetter). 
Geyserite | !—Rotorua (Hochstetter),. 
ffyalite |—Bank’s Peninsula, Malvern Hills, found lining 
cavities in vocanic rocks (Haast) : Dunedin, in vesicular 
grey-trachyte (Liversidge). 
Menilte | |—Bay of Islands. 
OrTHOCLASE, or PorasH Fetspar! !—Mount Misery, Bank’s 
Peninsula, West Coast, Auckland Islands, Ruapuke, 
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