Overview

Mine Type	Open Pit
Status	Active
Commodities	Anorthosite
Mining Method	Truck & Shovel / Loader
Production Start	...
Mine Life	...
Snapshot	In 2019, the White Mountain project began mining and shipping anorthosite product. Lumina Sustainable Materials A/S (formerly Hudson Greenland A/S) is a majority privately-owned business. We are shipping our key mineral Anorthosite from our plant in Greenland to customers on 3 continents. We develop high impact products that extend beyond industrial minerals through custom chemistry and processing solutions. Mine production numbers have not been publicly since 2021.

Deposit type

• Metamorphic

Summary:

Metamorphosed calcic anorthosites form one of the most distinctive rock units in the Archean gneiss complex of West Greenland. These anorthosites are of special interest because of their unusual composition with extremely calcic plagioclase, low-levels of extraneous mineral contaminates, and extensive preservation of primary igneous textures and minerals. These unique mineral-chemical attributes are directly linked to their potential use in various industrial mineral applications, in particular, their use as an alternative source of raw material for the aluminum industry.

Mineralization on the property consists of anorthosite with minor muscovite (2%) and clinozoisite (3%). Rutile, pyrite and biotite are present in extremely small amounts («1%) Thin section petrographic analysis (Le Couteur, 2012) indicates the anorthosite is composed of approximately 95% plagioclase. The rock is hard, massive and has an off-white colour with some vaguely defined patches having a faint brownish cast. The plagioclase varies in grain size up to about 30 mm across. The brownish-tinged patches appear to be large single crystals. The rock is described as coherent but crazed with fine fractures radiating in all directions, indicating the impact of tecto-morphism activity. Pale yellow clinozoisite grains up to 8 mm across, but typically less than 2 mm, account for about 2% of the rock mass. The clinozoisite grains are scattered throughout the rock mass, with some strung along fractures or present a fine veinlets. Pale-yellowish silvery muscovite up to 10 mm across is present at about 2% of the rock mass. Small (<0.1 mm) re-brown biotite plates can be observed in the coarsest transparent plagioclase.

Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

Operational metrics

Personnel

Job Title	Name	Profile	Ref. Date
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