Apophyllite, Gyrolite and Heulandite-Na
| ID | 329 | |
|---|---|---|
| Mineral |
Apophyllite
Gyrolite Heulandite-Na |
|
| Location | Poona - Maharashtra - India | |
| Fluorescence | LW-UV: close SW-UV: close |
|
| Mindat.org |
View Apophyllite information at mindat.org View Gyrolite information at mindat.org View Heulandite-Na information at mindat.org |
|
Mindat data
| ID | 283 |
|---|---|
| Long ID | 1:1:283:7 |
| Entry type | 5 |
| About the name | From the Greek for "away from" (ἀπό, apo) and "leaf" (φύλλον, phyllos), in allusion to the way it exfoliates upon heating. |
| shortcode_ima | Apo |
| ID | 1785 |
|---|---|
| Long ID | 1:1:1785:1 |
| Formula |
NaCa16(Si23Al)O60(OH)8 · 14H2O
|
| IMA Status |
0 1 |
| Other Occurrences | Hydrothermally altered basalt and basaltic tuffs |
| Discovery Year | 1851 |
| Diapheny | Transparent,Translucent |
| Tenacity | brittle |
| Colour | Brown, Colorless, White, Green |
| Hardness (min) | 2.5 |
| Hardness (max) | 2.5 |
| About the name | From the Greek guros = "circle", in allusion to the round form of the crystalline groupings |
| Streak | White |
| Crystal System | Triclinic |
| Cleavage Type | Perfect |
| Fracture type | Irregular/Uneven |
| Publication Year | 1851 |
| shortcode_ima | Gyr |
| Group | Gyrolite Group |
| ID | 1889 |
|---|---|
| Long ID | 1:1:1889:6 |
| Entry type | 5 |
| Description | Heulandite is the name applied to specimens of this subgroup with unknown dominance of the extra-framework cations. It comprises heulandite-K, heulandite-Na, heulandite-Ca, heulandite-Ba and heulandite-Sr. Note on the distinguishing differences betw... |
| About the name | Named in 1822 by Henry James Brooke in honor of Johann Heinrich "John Henry" Heuland [March 21, 1778 Beyreuth, Germany - November 16, 1856 Hastings, Sussex, England, UK], a mineral collector and mineral dealer living in England. Despite having an international reputation, there are no known images of Henry Heuland. |
| Group | Zeolite Group |
Details
Price: € 15
Dimensions: Not registered
Weight: 115 g
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| Al | Aluminium | |
| Ca | Calcium | |
| H | Hydrogen | |
| K | Potassium | |
| Na | Sodium | |
| O | Oxygen | |
| Si | Silicium |