Africa and Madagascar mineral specimens
including: celestite, fluorite, labradorite calcite, azurite, pyrite,
dioptase, carrolite, aegerine, and much more.
Aquamarine, Black Tourmaline, and Cleavelandite
Aquamarine, black tourmaline, and cleavelandite
have a coating of hyalite opal. The blue aquamarines range in size
from 1/4 inch thick by 1 1/2 inch long to tiny 1/2 inch crystals.
The black tourmalines are heavily striated with terminated tips. The
cleavlandite is groups of platy white crystals. The hyalite opal is
pale blue. The fluorescent opal covers much of the top of the specimen,
with additional groupings of clear bubbles. The 5.6 pound pegmatite
mineral specimen, from Madagascar, is 8 inches by 7 1/2 inches by
4 1/2 inches thick.
Aesthetic two inch mineral specimens
are products of alkaline volcanism in the East African Rift, from
Mount Malosa in Malawi aegerine needles and square prisms, smoky quartz
elegant crystals, zircon square prisms, high soda feldspar, books
of arfvedsonite crystals.
Aegerine is iron sodium silicate formed
from low silicate magma intrusions. The black four sided prisms with
steep terminations form a cluster that is attached to feldspar matrix.
3 inches by 2 1/2 inches by 1 inch.
Aegerine is iron sodium
silicate formed from low silicate magma intrusions. The black four
sided prisms are attached to feldspar. from Zomba Malosa, Malawi,
Africa. 1 1/2 inch by 1 1/4 inch by 1 inch.
Aragonite is formed from calcium carbonate
near hot springs into clusters of six-sided translucent rods ( psuedo-
hexagonal trillings). This aragonite cluster from Morocco is a spherical
cluster with the crystals jutting radially from the center with a
spur of two 1 3/8 inch intersecting crystals. The measurements are:
2 1/2 inches long by 1 1/2 inch wide by 1 1/2 inches high with a weight
of 73 grams.
Aragonite is formed from calcium carbonate
near hot springs into clusters of six-sided translucent rods ( psuedo-
hexagonal trillings). This aragonite cluster from Morocco is two spherical
cluster with the crystals jutting radially from the center are sitting
on a long crystal. The measurements are: 2 inches by 1 3/4 inch by
1 1/2 inches
Swirled florets composed of azurite
plate crystals form the roughly ovoid mass over 1 pound. The azurite
mineral specimen is 3 inch by 2 1/2 inch by 2 1/2 inch. White feldspar
clay clings to the deeper recesses contrasting the brilliant blue.
Location: copper mines of Kambova Region, southern Congo, Africa.
Swirled florets composed of azurite
plate crystals form the roughly circular mass that is riddled with
jutting ledges and deep clefts. The azurite mineral specimen is 2
3/8 inch by 2 inch by 1 1/2 inch. White feldspar clay clings to the
deeper recesses contrasting the brilliant blue. Location: copper mines
of Kambova Region, southern Congo, Africa.
Clear and lustrous barite is blocky
rectangles with beveled edges. 1 1/2 by 1 1/4 by 3/4 inch thick barite
mineral specimen is from Wessel Mine, North Cape, South Africa.
1 by 3/4 by 1/4 inch rectangle barite
crystals has one flat side coated with stubby barite crystals. All
the crystals are clear in the unique barite mineral specimen from
Wessel Mine, North Cape, South Africa.
The cluster of 1/4 to 5/16 inch barite
crystals are clear, lustrous and sharply formed. 1 1/2 by 1 1/8 by
3/4 inch. barite mineral specimen from Wessel Mine, North Cape, South
Africa.
Cobalt included calcite from Katanga,
Congo has stacks of deep pink poker chip crystals. 4 1/4 inch by 2
1/2 inch by 1 1/2 inch thick pink cobalt calcite has a pretty pink
and green marble matrix.
This rare carrolite specimen, with multiple
crystals, is composed of cobalt, copper, and nickel and iron isomorph
from over 1000 meters down in the Kambove Mine, Katanga, Congo. The
carrolite has silver metallic sheen on the triangle faces with beveled
corners. Triangles are etched into the faces creating a telescoping
effect. Numerous crystals are scattered around the calcite matrix;
some are around 3/8 inch. Overall measures 3 inches by 2 inches by
1 3/4 inches. Alternating Images.
Rare carrolite specimen, with multiple
crystals, is composed of cobalt, copper, and nickel and iron isomorph
from over 1000 meters down in the Kambove Mine, Katanga, Congo. The
carrolite has silver metallic sheen on the triangle faces with beveled
corners. Triangles are etched into the faces creating a telescoping
effect. This specimen has a very large 1 1/8 inch by 11/16 inch by
1/2 inch crystal. There is some chalcopyrite on the is 3 inch by 3
1/2 inch by 1 1/2 inch mineral specimen.
1 pound 1 ounce, 5 inches by 2 1/2 inches
by 2 inches, 3 1/2 inches by 1 3/4 inches deep, The solid celestite
geode has multiple vugs filled with clear to pale blue celestite crystals.
Celestite is strontium sulfate. The blue color is thought to be from
the natural irradiation of gold.
The 6 1/2 inch by 5 1/2 inch by 2 inch,
3 pound 7.4 ounce plate section of celestite geode from Madagascar
is a solid mass of lustrous, slender, sky blue crystals up to 1 inch
long. The celestite plate is composed of larger base crystals covered
with layers of tiny crystals in fascinating groupings that give this
specimen a druzy, ethereal appearance.The blue color of these celestite
(strontium sulfate) crystals is thought to be caused by natural irradiation
of gold. The gem luster and heavenly translucent blue make this one
of the most beautiful of the crystal minerals.
7/8 by 7/8 by 1/2 inch cluster of orange
spesserite garnets are nicely formed crystals that are gemmy with
faces like shine like polished facets. from Wessel Mine, North Cape,
South Africa.
Metamorphic limestone matrix has seams
of spesserite and anderite garnets. Fan shaped formations of fluorescent
khutnahorite cling to a ledge. 2 1/4 inch by 2 1/4 inch by 2 inch
garnet mineral specimen is from Wessel Mine, North Cape, South Africa.
Hausmannite crystals are tetragonal
dipyramids, The manganese oxide, mineral specimen is from N'Chwaning
Mine, Kuruman District, Northern Cape Province, South Africa. heavy
metal hausmannite mineral specimen is 2 by 1 7/8 by 3/4 inch thick.
Inesite is hydrated calcium manganese
silicate. The slender chisel shaped crystals are of the triclinic
system. The orange-brown crystals bristle over the surface of the
4 inch by 2 1/2 inch by 1/4 inch thick surface. The inesite is on
a thin, tough matrix. The inesite mineral specimen is from Black Rock
Mine, Cape Town, South Africa
Kutnohorite is a rare carbonate mineral
of the dolomite group. Tough needle crystals in fan-shaped clusters
are interpenetrated and have soft pink color that is fluorescent bright
orange-red. This aesthetic mineral specimen is from Wessel Mine, North
Cape, South Africa. 2 inches by 2 inch by 7/8 inch.
Light pink kutnahorite in broad fanned
bundles of sheaves. Ca(Mn+2,Mg,Fe+2)(CO3)2. Rare and beautiful manganese
carbonate from Wessel Mine, South Africa fluoresces orange. 1 3/4
by 1 5/8 by 1 inch.
Light pink kutnahorite is 4 by 3 by
2 inch is mounds on one side that are supported on the back side by
fanned bundles of crystal sheaves. Ca(Mn+2,Mg,Fe+2)(CO3)2. Rare and
beautiful manganese carbonate from Wessel Mine, South Africa fluoresces
orange.
A 1/4 inch crust of banded malachite
holds onto a sandy subsurface. The mounded formation has a sparkling
gemmy carpet of minute malachite crystals. 3 1/2 inch by 3 1/2 inch
by 1 1/2 inch mala
chite mineral specimen is from the copper mines of Kambova Region,
southern Congo
20 translucent, green sphene crystal
stud the pink marble matrix. There are red crystals with metallic
coating imbedded in the, 8 inch by 4 inch by 4 inch, mineral specimen
from Madagascar. The olive green, envelope shaped crystals have gem
luster. Alternating images
Sky blue celestite crystals,
with gem luster, fill the 2 pound 7 ounce, solid celestite geode from
Mahajanga, Madagascar. The 3 1/2 inch by 4 inch geode is 3 1/2 inches
deep. 3/4 terminated crystals have secondary, smaller crystals attached.
Celestite is strontium sulfate. The blue color is thought to be from
the natural irradiation of gold.
Selenite bar, from Africa, is 14 inches
long by 2 1/4 inch wide by 2 1/4 inch tapering to 1 1/2 inch. The
clear selenite is composed of small tubes oriented parallel to the
length reflecting shimmering bands along the width. The selenite bar
has vibrant visual effect that will complement a mineral display and
when cut and polished looks like man made fiber optic. Weighs: 4 pounds
4 ounces
Soft pink rhombohedra crystals(skewed
rectangles)form little mounds on the 3 1/4 inch by 1 3/4 inch by 3/4
inch thick rhodochrosite mineral specimen from from Wessel Mine, North
Cape, South Africa
The 2 pound pegmatite mineral specimen
is a massive chunk of black tourmaline crystals, orthoclase feldspar
and smoky quartz that is 5 by 4 by 3 inches. There is 3 inch area
that was an open vug full of nice black tourmaline crystals, smoky
quartz, feldspar crystals and 1/2 inch round masses of clear yellow
orthoclase known as noble orthoclase, a famed Madagascar mineral occurrence.
The 2 pound pegmatite mineral specimen
is a massive chunk of black tourmaline crystals, orthoclase feldspar
and smoky quartz that is 5 by 3 1/2 by 2 3/4 inches. There is 2 inch
vug full of terminated black tourmaline crystals, smoky quartz, feldspar
crystals
3 inch by 2 1/2 inch by 1 3/4 inch mineral
specimen is a pegmatite pocket with quartz, feldspar, and numerous
dark pink tourmaline crystals (1/2 to 5/8 inch). Attached to a large
feldspar crystal at the center of the pocket is a dozen rubellite
crystals.
Light blue celestite prisms line the
interior of the 6 inch by 3 1/4 inch by 2 1/4 inch celestite geode.
A large crystal with 1 1/2 inches visible is tucked into the bottom
of the bun shaped geode. Celestite is strontium sulfate formed in
limestone vugs; from Mahajanga. Weighs 2 1/2 pounds.
Celesite geode is clear crystals with
a faint blue tint. The cavern geode sparkles with lustrous triangular
faces of the stacked celestite crystals. 3 1/2 inch by 3 3/4 inch
by 2 1/2 inch deep.
The solid blue celestite geode from
Mahajanga, Madagascar weighs 156 grams. The light blue transparent
crystals of celestite, strontium sulfate, are one of the more aesthetic
mineral specimens. The blue color is thought to be caused by the iradiation
of gold. The 2 1/2 inch by 2 inch by 1 1/2 inch deep celestite geode
is an attractive display specimen.
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