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N. Z. ROCKS. 117 
36. Donomitr, on MacnesiAN Lntestone 
Group. 
Granular, compact aggregates of Bitter-spar and Cale- 
spar ; effervesce only feebly with acids. 
37. Gypsum GRovpP. 
Sulphate of Lime, usually crystalline, sometimes com- 
pact or fibrous, soft, and generally white. 
p. Porphyritic Gypsum. Taranaki. 
dg, Fibrous Gypsum. Rotorua Hot Springs. 
e, Spathic Gypsum (Selenite). Taranaki. 
839, SANDSTONE AND GRITSTONE GROUP. 
Small grains of some mineral cemented together by a 
mineral substance. 
a. Common Sandstone. Nelson. 
. Coarse grained Sandstone. Otago. 
¢, Fine grained Sandstone. Whareama. 
e, Hissile Sandstone. Hokianga. 
gy: Argillaceous Sandstone. Mount Charles, Otago. 
j,, Marly Sandstone. Kanieri, Hokitiki. 
7. Caleareous Sandstone. Nelson. 
}. Siliceous Sandstone. Rolling River, Nelson. 
], Ferruginons Sandstone. Wangarei, Auckland. 
m. Kaolin Sandstone. Wangarei, Auckland. 
p. Quartz Sandstone. Brunner Coal Mines, W. C. 
gq. Micaceous Sandstone. Brunner Coal Mines, W.C. 
s. Green Sandstone. Waikawa, Otago. 
f. Shell Sandstone. Wangapeka River, Nelson. 
40. CoNGLOMERATE oR PUDDINGSTONE Group. 
Rounded stones of any mineral or rock, firmly 
cemented together by media of various kinds. 
a. Calcareous Conglomerate. Queenstown, Otago. 
}, Sandstone Conglomerate. Wangapeka, Nelson. 
c. Mica Schist Conglomerate. Ruatanua, Nelson. 
d. Quartz Schist Conglomerate. Glengoil Claim, Nelson. 
