MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 103B 014

File Created:	25-Jun-1986	by	Larry Jones (LDJ)
Last Edit:	09-Mar-1989	by	Laura L. Duffett (LLD)

SUMMARY

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		NMI	103B11 Sds1
Name	HOTSPRING ISLAND	Mining Division	Skeena
		BCGS Map	103B053
Status	Showing	NTS Map	103B11W
Latitude	052º 34' 34''	UTM	09 (NAD 83)
Longitude	131º 26' 36''	Northing	5827922
		Easting	334439
Commodities	Hotspring, Sodium Sulphate	Deposit Types	T02 : Geothermal spring
Tectonic Belt	Insular	Terrane	Wrangell

Capsule Geology

The hot mineral spring is located at a 9-metre elevation on the west shore of Hotspring Island which lies 26 kilometres south of Lyell Island.

Analysis of the spring was taken in 1901.

The wallrock consists of a volcanic hypabyssal porphyry plug of the Tertiary Masset Formation, intruding siltstone and greywacke of the Lower Cretaceous Longarm Formation. These rocks are cut by quartz veins up to several centimetres wide.

The hotspring issues from several fissures within agglomerates at a rate of about 0.06 cubic metres per minute. The issuing temperature is 72 degrees celsius and the pH at 23 degrees celsius is 8.1. An analysis of the water gave 28.5 grains per litre of chlorides and 1.2 grains per litre of sulphates. Elemental content of the water, in parts per million, is as follows: Si - 46, Ca - 61, Na - 784, K - 48, Cl - 1742, SO4 - 199 and HCO3 - 24.

The hotspring may be a saline spring recirculating warmed meteoric waters with added seawater.


Bibliography	EMPR AR *1901-1001,1002 EMPR BULL 54, Fig. 34 GSC MAP 1385A GSC P 73-18, pp. 230,238; 86-20; 88-1E, pp. 221-227; 89-1H; 90-10; 91-1A, pp. 383-391 McDonald, J.J., (1978): Hotsprings of Western Canada, A Complete Guide; Labrador Tea Company, Vancouver, pp. 106-108 EMPR PFD 17124, 508390, 508993, 509085