
“VALUE OF LIGNITES AND IRONSTONES. 181 
Where the very base of the Lignite Tertiary is seen in the Bad Lands 
section, and further west near the 534 mile point, there appears, as 
already mentioned—to be a very persistent lignitiferous zone, but there 
is no appearance of any fuel of better quality like those of the extreme 
west. It, therefore, cannot be supposed that the improved appearance 
of the St. Mary seam, and others, is due merely to their occupation of 
a lower horizon than elsewhere exposed, irrespective of westward change 
in the character of the beds. 
427. The ironstones of the Lignite Tertiary formation, to which fre- 
quent reference has been made, though occurring very often in the 
same sections and in close proximity to the lignites, have not been ob- 
served in any part of the area examied to occur in considerable thickness. 
They generally appear in nodular sheets, or scattered nodules, following cer- 
tain horizons in the clays and argillaceous sands, and are found in greater 
or less abundance in nearly all the sections examined. Externally, they 
weather to various shades of chocolate-brown and reddish-brown, but are 
hard and compact in structure, and within preserve their original bluish- - 
grey, or yellowish grey colour. 
428, The subjoined partial analyses of specimens collected in 1873, 
were published in the “ Report of Progress” for that year. I regret that 
the time at my disposal prevents the execution of more complete analyses, 
or the examination of many other specimens subsequently obtained. 
Clay Ironstone. Souris Valley—(§ 209.) 

SANIT SIE MMI = eri ec ts ate) Sin ai e\ sid old's, « « shete sd aipssledstale'e, pais A aia 49.00 
meaner mNT UE N MORO Mle as ooeb dob dade oo iela wiv icine ie oddidie cle clacce'e's 1,21 
artes Acre Tam) OA ANGI es od) oo 0d 5 a nla 2:sale' die’ oo ae onie 28.57 
Snreseone Memnnee AMMOL eT CE os sis os ey Seine kee s ese eaaeens 17.04 
Sulphuric Acid........ We MeR TOMA ta, Lalole abi at ce vad n'd a's Me a ar oto diese 0.26 
mM Evie a tec eee oe Nee thn asic Am dae pity <a’onton Gain O 0.4, avis ook NACE 
Peeimiire Aran ar cont, 1 TAWA\OTOS 2. ook wise cod os coe cle ew aes os 38.11 
RN RTE MCUIGRT OUEY gy o 5. gaa xe tip. 6 psd a mn ve ee tes a nee we 54.27 
Clay Ironstone—Great Valley. 
IE Spa EE IS at a ee eS oe RA ae Ae 46.72 
MUIR RINNE SOP i i to em ees NT Sg ooaa'al andield wide od 
TOE, OMY OME OFF TOUIIMOT , 3 5s ods ooie we oe ei ase ccsecancsvess 21.23 
Speen MAMELON TUMOR ETRE eS lesineeawcecen’s 8.72 
ne CCE Dera ae eel doce hte ct ts ob am on hye enced sina 0.30 
NNN laa pactatatae stare dia Scag sais wre 0 ed nig w'eleia weiss ans 0.03 
SAC EEE Oe rt ob elec ble a elas 36.34 
IEEE) TINURS AON ORCESIO ONIN ro eg decile cVouenacdeovwene. 49.90 
A small quantity of iron is present as peroxide in each ore, but I 
have not thought it necessary to make a separate estimation of this, 


