Mordenite and Stilbite-Ca
| ID | 537 | |
|---|---|---|
| Mineral |
Mordenite
Stilbite-Ca |
|
| Location | Aurangabad - Mahrashtra - India | |
| Fluorescence | LW-UV: check SW-UV: check |
|
| Mindat.org |
View Mordenite information at mindat.org View Stilbite-Ca information at mindat.org |
|
Mindat data
| ID | 2779 |
|---|---|
| Long ID | 1:1:2779:9 |
| Formula |
(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
|
| IMA Status |
0 1 |
| General Appearance | Rounded masses to about 5 cm, blotched with green celadonite. White, yellowish or pink, sometimes with a thin yellowish crust. With a very fine fibrous structure. |
| Occurrence | Basalt. |
| Other Occurrences | Veins and amygdaloids in igneous rocks. |
| Discovery Year | 1864 |
| Diapheny | Transparent,Translucent |
| Cleavage | Perfect on {100}; distinct on {010}. |
| Tenacity | brittle |
| Colour | Colourless, white, yellowish, pinkish |
| Hardness (min) | 3.0 |
| Hardness (max) | 4.0 |
| About the name | For the community of Morden, Nova Scotia, the type locality. |
| Streak | White |
| Crystal System | Orthorhombic |
| Cleavage Type | Perfect |
| Fracture type | Irregular/Uneven |
| Morphology | Prismatic crystals, acicular to fine fibrous, radiating groups, cottony aggregates, compact, porcelaneous. |
| Thermal Behaviour | Before the blowpipe it fuses in a good heat without any intumescence to a glassy bead or white enamel. |
| Comment Luster | Pearly on {010} |
| Publication Year | 1864 |
| shortcode_ima | Mor |
| Group | Zeolite Group |
| ID | 7313 |
|---|---|
| Long ID | 1:1:7313:0 |
| Formula |
NaCa4(Si27Al9)O72 · 28H2O
|
| IMA Status |
0 1 |
| Other Occurrences | A low temperature hydrothermal mineral, in amygdules and cavities in basalt. |
| Diapheny | Transparent,Translucent |
| Cleavage | on {010} |
| Colour | White, colourless, red, light yellow, light to dark brown, cream, orange, pink |
| Hardness (min) | 3.5 |
| Hardness (max) | 4.0 |
| Lustre | Vitreous , Pearly |
| About the name | Named in 1797 by Jean Claude de la Métherie from Greek στιλβη "stilbein", to glitter or shine, or "stilbe", a mirror, alluding to its pearly or vitreous luster. Originally, but inconsistently called zeolite in 1756 by Axel Cronstedt. Named crystalii ad centrum tendentes in 1758 by Cronstedt. In 1772, Johan Gottschalk Wallerius called this mineral zeolite selenitica lamellaris. Also in 1797, de la Métherie called this mineral zeolite nacrée. Werner (1780) called this mineral strehliger zeolith. Rene Just Haüy (1801) used the term stilbite anamorphique for a mineral now recognized as heulandite. Desmine was introduced in 1818 by Johann Friedrich August Breithaupt. Sphaerostilbite was used in 1832 by François Sulpice Beudant. Additional varietal names and synonyms have been proposed: blättricher zeolit, hypostilbite, puflerite, radiated zeolite, and syhedrite. Chemical suffixes were added by the IMA. |
| Streak | White |
| Crystal System | Monoclinic |
| Cleavage Type | Perfect |
| Fracture type | Irregular/Uneven |
| Morphology | Typically thin tabular, sheaflike or globular clusters. |
| Twinning | Ubiquitous on {001}, cruciform and penetration. |
| UV | May fluoresce pale-yellow or blue-white in shortwave UV. |
| Comment Luster | Pearly on cleavage |
| shortcode_ima | Stb-Ca |
| Group | Stilbite Subgroup |
Details
Price: € 25
Dimensions: Not registered
Weight: Not registered
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| Al | Aluminium | |
| Ca | Calcium | |
| H | Hydrogen | |
| K | Potassium | |
| Na | Sodium | |
| O | Oxygen | |
| Si | Silicium |