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> Minerals
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Natrolite
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| Apophyllite, Natrolite
 Mariánská Skála, Ústí nad Labem, Ústí Region, Bohemia, Czech Republic
Item-No.: MIN5899
Price: 55.00 EUR
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| Nathrolite
Soutěsky, Děčín, Ústí Region, Bohemia, Czech Republic
Item-No.: MIN5714
Price: 30.00 EUR
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| Synonyms: |
Apoanalcite, Cockalite, Crocalite, Epinatrolite, Lehuntite, Needlestone, Portite, Radiolite |
| Classification: |
Silicates, Tektosilicates, Zeolite Group |
| Chemical formula: |
Na2(Si3Al2)O10·2H2O |
| Crystal system: |
Orthorhombic |
| Density (g/cm3): |
2,2 - 2,26 measured, 2,25 calculated |
| Tenacity: |
Brittle |
| Cleavage: |
Perfect on {110} |
| Fracture: |
Irregular/uneven, sub-conchoidal |
| Hardness (Mohs): |
5 - 5,5 |
| Colour: |
White, colorless, red, yellow, brown, green, bluish |
| Lustre: |
Vitreous, pearly |
| Streak: |
White |
| Type locality: |
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany |
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