Prehnite
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Prehnite is an orthorhombic mineral which is rarely found as distinct crystals. Found in association with
volcanic rocks, it usually forms in aggregates with botryoidal habit. Prehnite is typically pale green to
yellowish green with a white streak. It is named after a Dutchman, Colonel H. von Prehn, who discovered
the mineral at the Cape of Good Hope, South Africa, and brought the first specimens to Europe.  Prehnite
occurs most commonly in veins and cavities in igneous rocks, often in association with zeolites. Prehnite
is never clean enough to produce bright faceted gemstones but beautiful yellow to blue green cabochons
can be cut from the right material.
Item # PH0409746
Rare Crystal Prehnite
with Gyrolite nodules
from Mumbai India

$49.00
Rare Crystal Prehnite with Gyrolite nodules from Mumbai, India.
This is an old stock estate specimen from a Michigan estate. Excellent example of the rarest form of Prehnite in
its crystal form instead of the usual botryoidal form. Gyrolite often forms nodular aggregates. These
aggregates can appear glassy, dull or even fiberous. Unlike other similar looking minerals (such as prehnite or
smithsonite), gyrolite usually forms individual nodules as opposed to botryoidal or crustal growths. The
aggregate nodules can often accompany many fine and rare minerals such as apophyllite, okenite and many
of the zeolites. Much gyrolite forms inside of volcanic bubbles called vesicles and can only add another
element to the surreal mineral-scape inside.
This specimen weighs 0.35 lbs (157g) and measures 3.5 x 2.5 x 1.2 inches (91 x 63 x 30mm)
Item # PH05112390
Green Prehnite and Calcite
Crystals from New Jersey

$22.00
Green Prehnite and Apophyllite Crystals
This is a very nice display of  Calcite Crystals on Prehnite from the Prospect Park Quarry in North Haledon, New Jersey.
The site is an active quarry which cuts through several basalt flows. Formation- the quarry cuts into the Preakness
Basalt. This is from the Alan Beres collection, He collected during the 1930's through the 1960's. There is a little
damage as can be seen in the pictures.
This specimen measures 3.3 x 2.4 x 1.8" (8.4 x 6.3 x 4.5cm) and weighs 0.43lb ( 195g )
Item # PH05113390
Green Prehnite with
Apophyllite and Calcite
Crystals from New Jersey

$26.00
Green Prehnite with Apophyllite and Calcite Crystals
This is a very nice display of  Apophyllite and Calcite Crystals on Prehnite from the Prospect Park Quarry in North
Haledon, New Jersey. There is a small Apophyllite crystal in the center of the vug. The site is an active quarry which
cuts through several basalt flows. Formation- the quarry cuts into the Preakness Basalt. This is from the Alan Beres
collection, He collected during the 1930's through the 1960's. There is a little damage as can be seen in the pictures.
This specimen measures 3.9 x 2.2 x 3" (10 x 5.8 x 7.6cm) and weighs 0.88lb ( 400g )
Item # PH09110012
Prehnite & Calcite plate from
the Fanwood Quarry in New
Jersey

$49.00
Green Prehnite and Calcite plate
Prehnite & Calcite plate from the Fanwood Quarry in New Jersey. This specimen is from the Joseph Cielecki collection. He
was a truly gifted field collector who made many significant discoveries at Fanwood. He collected from 1974 to 1984. Very
nice representation from the 1980’s Prehnite finds! It measures a huge 6.8 x 2.6 inches and it shows very well. Specimens
from this local are extremely rare! This piece has good color & form, classic material, vintage locale and a large cabinet
size! This piece is a serious addition to any collection and a solid acquisition for the New Jersey collector. There is a little
damage as can be seen in the pictures.
This specimen measures 6.8 x 2.5 x 2.6" (17.3 x 6.4 x 6.8cm) and weighs 1.41lb ( 643g )
Item # PH09110060
Prehnite Vug from Prospect
Park New Jersey

$29.00
Prehnite Vug
This is a large Prehnite Vug from the world famous Prospect
Park quarry in New Jersey. This piece is from the Alan "Bundy"
Beres collection. He collected in NJ from the 1930's to the early
1960's. Prospect Park is known across the globe for its
magnificent minerals and it is a classic New Jersey locale. This
is a very unique large vug that is lined with Prehnite! It
measures 4 x 2 3/4 inches. This is a rare form for NJ Prehnite!
Very good display specimen and a super teaching specimen
from a disappearing site as Prospect Park is currently being
backfilled. Specimen has good color & form, a classic material
from a vintage locale! There is a little damage as can be seen
in the pictures.
This specimen measures 4 x 2.7 x 1.8" (10.4 x 6.9 x 4.7cm)
and weighs 0.59lb ( 270g )
Item # PH09115461
Green Prehnite and Calcite
Crystals from New Jersey

$33.00
Green Prehnite and Calcite Crystals
This is a very nice display of Prehnite from the Prospect Park Quarry in North Haledon, New Jersey. There is a small
calcite crystal vein in the outer layer. The site is an active quarry which cuts through several basalt flows. Formation-
the quarry cuts into the Preakness Basalt. This is from the Alan Beres collection, He collected during the 1930's
through the 1960's. There is a little damage as can be seen in the pictures.
This specimen measures 4 x 2.8 x 2.2" (10.1 x 7.3 x 5.7cm) and weighs 0.65 lb (296g )
Item # PH09115411
Green Prehnite and Calcite
Crystals from New Jersey

$28.00
Green Prehnite and Calcite Crystals
This is a very nice display of Calcite Crystals on Prehnite from the Prospect Park Quarry in North Haledon, New Jersey.
This is very rich in color and crystal formations and there is are small calcite crystals around the prehnite. The site is an
active quarry which cuts through several basalt flows. Formation- the quarry cuts into the Preakness Basalt. This is
from the Alan Beres collection, He collected during the 1930's through the 1960's. There is a little damage as can be
seen in the pictures.
This specimen measures 3.4 x 2.3 x 1.9" (8.6 x 5.8 x 4.8cm) and weighs 0.52lb ( 238g )
Item # PH09115490
Prehnite with Calcite
Crystals from New Jersey

$29.00
Prehnite with Calcite Crystals
This is a very nice display of Prehnite & Calcite crystals. This is very rich in color and crystal formations. The Prehnite
is green to golden brown on this specimen from the Prospect Park Quarry in North Haledon, New Jersey. The site is an
active quarry which cuts through several basalt flows. Formation- the quarry cuts into the Preakness Basalt. This is
from the Alan Beres collection, He collected during the 1930's through the 1960's. There is a little damage as can be
seen in the pictures.
This specimen measures 2.5 x 1.6 x 1.4" (6.5 x 4.2 x 3.6cm) and weighs 0.2lb ( 92g )
Item # PH09114490
Prehnite with Calcite
Crystals from New Jersey

$19.00
Item # PH09117490
Mint Green Prehnite Crystals
from New Jersey

$19.00
Mint Green Prehnite Crystals
This is a very nice display of mint green Prehnite crystals. This is very rich in color and crystal formations. This will
make for a great addition for any ones collection. This comes from the Carlson collection; he collected during the 60's
& 70's from the Prospect Park Quarry in North Haledon, New Jersey. The site is an active quarry which cuts through
several basalt flows. Formation- the quarry cuts into the Preakness Basalt. There is a little damage as can be seen in
the pictures.
This specimen measures 2.8 x 2.3 x 1.5" (7.2 x 5.8 x 3.9cm) and weighs 0.27lb ( 122g )
Item # PH09113490
Green Prehnite Finger
Crystals from New Jersey

$17.00
Green Prehnite Finger Crystals
This is a very nice display of Green Prehnite Finger crystals. This is green color and has 2 crystal formations. This will
make for a great addition for any ones collection. This comes from the Carlson collection; he collected during the 60's
& 70's from the Prospect Park Quarry in North Haledon, New Jersey. The site is an active quarry which cuts through
several basalt flows. Formation- the quarry cuts into the Preakness Basalt. There is a little damage as can be seen in
the pictures. The largest finger is 16mm wide x 27mm tall.
This specimen measures 1.8 x 1.6 x 1.7" (47 x 40 x 44mm) and weighs 0.15 lb ( 70g )
Item # PH09115460
Green Prehnite and Calcite
Crystals from New Jersey

$14.00
Green Prehnite and Calcite Crystals
This is a very nice display of Calcite Crystals on Prehnite from the Prospect Park Quarry in North Haledon, New Jersey.
The site is an active quarry which cuts through several basalt flows. Formation- the quarry cuts into the Preakness
Basalt. This is from the Carlson collection; he collected during the 60's & 70's There is a little damage as can be seen
in the pictures.
This specimen measures 1.7 x 1 x 0.9" (45 x 26 x 24mm) and weighs 0.84 oz (24g )
Item # PH09115470
Green Prehnite and Calcite
Crystals from New Jersey

$26.00
Green Prehnite and Calcite Crystals
This is a very nice display of Calcite Crystals on Prehnite from the Prospect Park Quarry in North Haledon, New Jersey.
The site is an active quarry which cuts through several basalt flows. Formation- the quarry cuts into the Preakness
Basalt. This is from the Carlson collection; he collected during the 60's & 70's There is a little damage as can be seen
in the pictures.
This specimen measures 2.6 x 1.6 x 1.7" (6.6 x 4.1 x 4.4cm) and weighs 0.27 lb (124g)
Prehnite with Calcite Crystals
This is a very nice display of Prehnite & Calcite crystals. This is very rich in color and large crystal formations. The
Prehnite is green to golden brown on this specimen from the Prospect Park Quarry in North Haledon, New Jersey. The
site is an active quarry which cuts through several basalt flows. Formation- the quarry cuts into the Preakness Basalt.
This is from the Alan Beres collection, He collected during the 1930's through the 1960's. There is a little damage as
can be seen in the pictures.
This specimen measures 1.7 x 1.4 x 1.3" (4.3 x 3.5 x 3.4cm) and weighs 0.15lb ( 69g )