Mariposa "Butterfly" Calcite
SpiritRock Shop
5.8" Scalenohedral Butterfly "Mariposa" Calcite
Excellent display cabinet specimen of well defined and sharp Scalenohedral (dogtooth)
clear calcite crystals with phantom hematite inner red and maroon crystals mined at the
20th level of the Potosí Mine, located in the Santa Eulalia District, Aquiles Serdan,
Chihuahua, Mexico.
This specimen weighs 28 oz or 1.75 lbs (795 grams) and measures 5.8 x 3.9 x 2 inches
(14.8 x 9.9 x 5.2 cm)
Click on any photo to see a larger version
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Mariposa Mine calcite gained fame for having a phosphorescence more brilliant than it's
fluorescence...under SW Ultra Violet light the bright red fluorescence is almost
immediately lost by the occurrence of a brilliant bluish-white phosphorescence...the true
Mariposa Calcite is actually from the Mariposa Mine (California Mountain Mine),
Terlingua District, Brewster Co., Texas, USA
Today what is now called Mariposa Calcite is characterized by alternating overgrowths
of dogtooth calcite and hematite that create beautiful phantoms and inclusions. The true
Mariposa (butterfly) Calcite had not been found for almost 40 years. Under UV SW the
areas of white calcite glow bright red. The calcite that glows like fire on these specimens
is found on the bottom and sides of the specimen. The area of crystal points has only a
few spots that fluoresce. What people love about Mariposa Calcite is that it is a great
looking specimen even without the UV lamp.
The miners currently have to go on a two or three day trip into the mine to get these
"Mariposa-like" specimens. It is dangerous work and we feel it's just amazing to have
any of them for our collection. Our supply of "Mariposa Calcite" is mined at the 20th level
of the Potosí Mine, located in the Santa Eulalia District, Aquiles Serdan, Chihuahua,
Mexico. These specimens have excellent Scalenohedral (dogtooth) calcite crystals with
phantom hematite inner red and maroon crystal formations in a clear to orange tinted
calcite. These Potosí Mine specimens are some of the nicest "Mariposa Calcites"
available on the market today
5.3" Mariposa "Butterfly" Calcite
Excellent large display cabinet specimen of
well defined and sharp Scalenohedral
(dogtooth) clear calcite crystals with phantom
hematite inner red and maroon crystals.
Several of the hematite inner growths are
protruding out of the calcite crystals giving this
piece mined at the 20th level of the Potosí
Mine, located in the Santa Eulalia District,
Aquiles Serdan, Chihuahua, Mexico.an
exceptional display appearance
This specimen weighs 701g (1.55 lbs) and
measures 5.3 x 3.6 x 2.2 inches ( 134 x 91 x 56mm)
Item # MC09146506
5.8 inch Scalenohedral Butterfly
"Mariposa" Calcite

$120.00
Item # MC0409002
5.3 inch Mariposa "Butterfly" Calcite
This is a wonderful large cabinet specimen of Mariposa calcite. Mariposa calcite is
characterized by alternating overgrowths of calcite and hematite that create beautiful
phantoms and inclusions. The largest crystal on this specimen measures 42mm.
We were lucky to get this specimen from the few finds in a 2004 small pocket. The
Mariposa (butterfly) calcite had not been found for almost 30 years before that find.
Under Ultraviolet SW light the areas of white calcite glow bright red. The calcite that
glows like fire on this specimen is found on the bottom and end of the specimen.
Several of the crystal points on this piece fluoresce. Collectors enjoy Mariposa calcite
because it is a great looking daylight or Ultraviolet specimen.
This specimen is from the Santa Eulalia District, Aquiles Serdan, Chihuahua, Mexico.
The specimen miners had to go on a 3 day expedition into the mine to get these. It is
difficult and dangerous work getting these specimens and it's rare and exciting to have
them.
This specimen weighs 4 lbs (1821g) and measures 8 x 6.1 x 2.3” (20.4 x 15.6 x 5.9cm
Item # MC05112179
XL 8 inch Mariposa "Butterfly" Calcite
4.5" XLS Scalenohedral Butterfly "Mariposa" Calcite
Excellent display cabinet specimen of well defined and sharp Scalenohedral
(dogtooth) clear calcite crystals with phantom hematite inner red and maroon
crystals mined at the 20th level of the Potosí Mine, located in the Santa Eulalia
District, Aquiles Serdan, Chihuahua, Mexico. The specimen miners had to go
on a 3 day expedition into the mine to get these. It is difficult and dangerous
work getting these specimens and it's rare and exciting to have them.
Collectors enjoy "Mariposa" calcite because it is a great looking daylight or
Ultraviolet specimen. This piece has large points.
This specimen weighs 22.7 oz or 1.42 lbs (643 grams) measures 4.5 x 3.3 x 2.6
inches (11.5 x 8.5 x 6.7 cm)
Item # MC09148827
4.5 inch XLS Scalenohedral
Butterfly "Mariposa" Calcite

$149.00