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This Specimen has been sold.
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3.8" Lustrous Yellow Sulfur Crystals on Calcite - Poland
This is a stunning, 3.8" wide plate of lustrous sulfur crystals that formed over a bed of calcite, collected from the Machow Mine in Poland. This mine produced some beautiful sulfur specimens in the past but has been flooded and closed for some time.
It has been mounted to clear acrylic display base.
It has been mounted to clear acrylic display base.
About Calcite Crystals
Calcite crystals are a form of calcium carbonate (CaCO₃) known for their diverse shapes, transparency, and vibrant range of colors. They typically form in rhombohedral, scalenohedral, or prismatic shapes, often with well-defined, sharp edges and glossy surfaces. Calcite crystals are often translucent or transparent, sometimes displaying a double refraction effect where objects viewed through the crystal appear doubled. They can appear in various colors—white, clear, yellow, pink, blue, green, and orange—depending on impurities or trace minerals.
A notable characteristic of calcite is its reaction with weak acids like vinegar, which causes it to effervesce, or fizz, as it releases carbon dioxide. This property makes calcite crystals a key tool in geological identification and studies. Calcite forms in many environments, from sedimentary rocks like limestone and marble to hydrothermal veins.
Calcite crystals are a form of calcium carbonate (CaCO₃) known for their diverse shapes, transparency, and vibrant range of colors. They typically form in rhombohedral, scalenohedral, or prismatic shapes, often with well-defined, sharp edges and glossy surfaces. Calcite crystals are often translucent or transparent, sometimes displaying a double refraction effect where objects viewed through the crystal appear doubled. They can appear in various colors—white, clear, yellow, pink, blue, green, and orange—depending on impurities or trace minerals.
A notable characteristic of calcite is its reaction with weak acids like vinegar, which causes it to effervesce, or fizz, as it releases carbon dioxide. This property makes calcite crystals a key tool in geological identification and studies. Calcite forms in many environments, from sedimentary rocks like limestone and marble to hydrothermal veins.
About Sulfur Crystals
Sulfur is a striking and instantly recognizable mineral, prized by collectors for its vivid yellow coloration and its distinctive crystal habits. Chemically, sulfur occurs as S₈—ring-shaped molecules composed of eight sulfur atoms—which give rise to its characteristic resinous luster and translucent glow. In nature, well-formed sulfur crystals typically develop as sharp dipyramids or blocky, tabular shapes. These specimens most often originate in volcanic or sedimentary environments, where sulfur precipitates from sulfur-rich gases or hydrothermal fluids. Many classic localities, such as Sicily or the salt domes of Texas and Louisiana, produce crystals perched on matrixes of gypsum, aragonite, or limestone, creating visually dramatic contrasts.
In the context of mineral specimens, sulfur requires a bit of care. The crystals are relatively soft and brittle, and can fracture if subjected to sudden temperature changes. Because of this thermal sensitivity, sulfur is best stored in a stable environment away from heat sources, bright sunlight, or rapid fluctuations in temperature. With proper handling, however, these luminous yellow crystals remain some of the most eye-catching and iconic mineral specimens in the collecting world.
Sulfur is a striking and instantly recognizable mineral, prized by collectors for its vivid yellow coloration and its distinctive crystal habits. Chemically, sulfur occurs as S₈—ring-shaped molecules composed of eight sulfur atoms—which give rise to its characteristic resinous luster and translucent glow. In nature, well-formed sulfur crystals typically develop as sharp dipyramids or blocky, tabular shapes. These specimens most often originate in volcanic or sedimentary environments, where sulfur precipitates from sulfur-rich gases or hydrothermal fluids. Many classic localities, such as Sicily or the salt domes of Texas and Louisiana, produce crystals perched on matrixes of gypsum, aragonite, or limestone, creating visually dramatic contrasts.
In the context of mineral specimens, sulfur requires a bit of care. The crystals are relatively soft and brittle, and can fracture if subjected to sudden temperature changes. Because of this thermal sensitivity, sulfur is best stored in a stable environment away from heat sources, bright sunlight, or rapid fluctuations in temperature. With proper handling, however, these luminous yellow crystals remain some of the most eye-catching and iconic mineral specimens in the collecting world.
SPECIES
Sulfur & Calcite
LOCATION
Machow Mine, Tarnobrzeg, Subcarpathian Voivodeship, Poland
SIZE
3.8 x 2.2"
CATEGORY
ITEM
#206043
