|Newfoundland and Labrador has a varied selection of metallic
minerals. The following is a small representation of this selection.
They depict the quality of collectible metallic minerals available in
Newfoundland and Labrador. All photographs by James Butler. The small images are
linked to full sized photographs with more detail, but will take some
time to load.
Chalcopyrite (CuFeS2), a copper-iron sulphide, is the most widespread
copper mineral, and one of the most important sources of that metal.
The specimen shown in the photo is chalcopyrite owned by Mort
Verbiski. It is from the Buchans area.
Chalcopyrite is formed under a great variety of conditions. Most
sulphide ore deposits contain some chalcopyrite. It is associated
with other minerals such as sphalerite, galena, cassiterite and
Numerous showings of chalcopyrite have been recorded
from Newfoundland and Labrador. It was mined at several places on the Baie Verte
Peninsula (Tilt Cove, Rambler) and in the Springdale area (Whalesback,
Gullbridge) as well as a by-product of the mine at Buchans. Numerous
showings have been recorded on the island as well as in Labrador.
Gold (Au) is a precious metal used in jewelry. It has many industrial
and medical applications. The photo on the left contains a specimen
of gold in quartz vein is from an unknown location in Newfoundland.
This sample is owned by the Provincial Museum.
The photo in the middle and on the right show two specimens of gold
from the Baie Verte Peninsula. Samples were provided by Brian Dalton
and Paul Crocker.
Gold generally occurs in a native state,
i.e., it only rarely forms compounds with other minerals such as
tellurium. Most gold is commonly found in quartz veins in association
with pyrite and other sulphides. Visible gold is rare and most gold
is detected by chemical analysis.
In Newfoundland, gold is
produced by Royal Oak Mines at Hope Brook on the southwest coast and
on the Baie Verte Peninsula. Along with the area mentioned above,
gold is also found on the Baie Verte Peninsula and in central
Hematite (Fe2O3) is an iron oxide and it is the most important and
widely used source mineral for iron. Good quality specimens are also
used as a semi-precious gemstone, Alaska Black Diamond. The
photograph shows micaeous hematite from Wabush, Labrador. It is from
the MUN Collection, sample 0241.
Hematite is frequently found as an accessory in igneous rocks and may
be associated with magnetite in special circumstances. Some huge
deposits of hematite are of sedimentary origin.
Newfoundland has been a major supplier of iron to the world markets
for a long time. From about 1895 until the mines closed in the early
1960's sedimentary iron ore was mined on Bell Island.
Today, all iron production in the province is from the metamorphosed
deposits in the Labrador Trough, centered in the towns of
Molybdenite (MoS2), commonly called "Moly", is a molybdenum sulphide
that is the principal source of molybdenum. The sample shown is from a
granite body in the Bay d'Espoir area of southern Newfoundland. It is
from the Steven V. Papezik Collection, MUN.
Molybdenite is the most common molybdenum mineral and is found as an
accessory in some granites. It also occurs with other mineralization,
such as scheelite, wolframite, topaz, copper and fluorite. Molybdenum
has many applications as a special steel alloy.
Although not mined in Newfoundland and Labrador, molybdenite is associated with the
Rencontre Lake area of the Ackley Granite of southern Newfoundland.
Native copper (Cu) is the naturally occurring elemental form of copper.
Copper was one of the first metals used by man. It has many uses and
in the home water pipes and electrical wires are made from copper.
The photograph shows a typical sample of native copper. This sample
is owned by the Provincial Museum.
Native copper is most commonly associated with basic extrusive igneous
rocks, particularly in the Keweenaw Peninsula of Michigan in the
United States. Native copper is also common in the Bay of Fundy
region of Nova Scotia. It is usually associated with other
copper-bearing minerals such as chalcocite and bornite.
Most occurrences of native copper in our province are found in
the Seal Lake area of central Labrador.
Pyrite (FeS2) is an iron sulphide that commonly has a pronounced
cubic structure with striated surfaces. It is found in almost any
type of geological environment. Sometimes it is mistaken for gold,
because of its yellow colour, hence the name "Fool's Gold"..
The pyrite in the photo on the left show the typical cubic structure
of the mineral. The samples are from Catalina, Trinity Bay, and are
owned by Loretta Crisby-Whittle. The sample on the right is part of the
host mineral for the gold deposits at Royal Oak Mines, Hope Brook.
Pyrite is by far the most common and widespread sulphide mineral. It
is found in almost any geological environment. It is rarely of
economic importance itself, but its presence calls attention to areas
that may contain important economic minerals.
Sphalerite (Zn,FeS) is a zinc sulphide that supplies the bulk of the
world's supply of zinc. This sample of sphalerite (brown mineral) is
from Daniel's Harbour, Great Northern Peninsula. It is
owned by the Provincial Museum.
Sphalerite is usually found in association with galena in the most
important deposits of these metals. It can also be associated with
chalcopyrite, pyrite, pyrrhotite and magnetite. The world's annual
production of cadmium is obtained as a by-product of the zinc
In Newfoundland, sphalerite has been mined
at a number of locations, including Buchans, in association with
galena and chalcopyrite, and at Daniel's Harbour, on the Great
Northern Peninsula, which was a "Mississippi Valley-type" deposit and
had cadmium as a by-product.