Haines Iron

Prospect, Inactive

Commodities and mineralogy

Main commodities Fe; Ti
Ore minerals ilmenite; titaniferous magnetite
Gangue minerals amphibole; calcite; chlorite; epidote; feldspar; pyroxene

Geographic location

Quadrangle map, 1:250,000-scale SK
Quadrangle map, 1:63,360-scale A-2
Latitude 59.25
Longitude -135.58
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is located about 2 miles west of Haines on the northern edge of the Haines Highway in about the middle of section 28, T. 30 S., R. 59 E. of the Copper River Meridian. It is shown as location 18 of Cobb (1972 [MF 424]).

Geologic setting

Geologic description

This prospect occurs within what Still and others (1991) call the Haines mafic-ultramafic complex. They believe this complex to be of similar character and the same age as the Cretaceous, Klukwan mafic-ultramafic complex (SK030) (MacKevett and others,1974). Knopf (1910) describes this prospect as pyroxenite that contains magnetite intergrown with ilmenite in grains as much as 0.25 in diameter. The pyroxenite is in contact with epidote diorite and metabasalt. He estimates the resource at several billion tons of material containing less than 10% magnetite.
Geologic map unit (-135.581831722274, 59.2496718207131)
Mineral deposit model Disseminated magnetite and ilmenite in a pyroxenite (Cox and Singer, 1986; model 9).
Mineral deposit model number 9
Age of mineralization Probably Cretaceous based on Still and others' (1991) correlation of the Haines mafic-ultramafic complex with the Cretaceous, Klukwan mafic-ultramafic complex (SK030) to the north (MacKevett and others, 1974).
Alteration of deposit Chloritization.

Production and reserves

Workings or exploration A 100-foot tunnel that was driven in 1906 is now caved (Robertson, 1956).
Indication of production None
Reserve estimates 'Widely spaced dip needle traverses and sampling along the shore and in roadcuts in the early 1950's indicated that the Haines deposits contained several billion tons of low-grade magnetite-bearing pyroxenite. Data are inadequate to estimate the grade, but the magnetic iron content seems to be less than 10%' (Berg and Cobb, 1967).

References

MRDS Number A013107

References

Reporters T.C. Crafford (T. Crafford & Associates, Anchorage)
Last report date 2/4/2001