The Buccaneer of the North marl deposit is located 1 kilometre west of the Canadian National Railway Ritchie siding, 46 kilometres north-northeast of Terrace.
The deposit lies on a wide gravel bench of glaciofluvial origin in an ephemeral kettle lake within an abandoned channel of the Skeena River. This glaciofluvial cover of gravel and sand is in excess of 10 metres thick and overlies Jurassic to Cretaceous Bowser Lake Group sediments.
The marl is contained in a depression 110 metres wide and 115 metres long and continues south-southeast for at least 70 metres beneath a gently dipping bench. Hand drilling in the depression encountered 9 metres of marl. The deposit is reported to thicken to 10 metres at the east end of the bench. Reserves for the entire deposit are estimated to range between 64600 and 88400 tonnes of dry marl assuming a moisture content of 30 to 50 per cent for the crude marl (Fieldwork 1988, p. 495).
The deposit is comprised of white to light grey to medium green-grey laminated marl containing abundant fragments of roots, wood and aquatic mosses. Pelecypod and gastropod shells are also present. The average analysis of eight grab samples is as follows in per cent (Fieldwork 1989, p. 496):
------------------- CaO 45.88 MgO 0.63 SiO2 7.94 Al203 1.79 Fe2O3 0.70 MnO 0.01 TiO2 0.09 K2O 0.34 Na2O 0.55 P2O5 0.06 BaO 0.03 Sulphur 0.03 L.O.I. 40.45 -------------------
CaO 45.88
MgO 0.63
SiO2 7.94
Al203 1.79
Fe2O3 0.70
MnO 0.01
TiO2 0.09
K2O 0.34
Na2O 0.55
P2O5 0.06
BaO 0.03
Sulphur 0.03
L.O.I. 40.45
-------------------
A total of 111 tonnes of marl were produced by Anderson and Johnson in 1936 and 1939.