Mineralienatlas - Fossilienatlas
Prehnite |
Pictures (591 Images total)
Views (File: ): 884
Prehnit Er Rachidia, Imilchil, Marokko Copyright: dendrocopos; Contribution: dendrocopos Location: Marokko/Drâa-Tafilalet, Region/Midelt, Provinz/Imilchil, Cercle/Imilchil, Caïdat/Imilchil Mineral: Prehnite Image: 1441717759 Rating: 8 (votes: 1) License: Usage for Mineralienatlas project only |
Prehnit |
Er Rachidia, Imilchil, Marokko |
Copyright: | dendrocopos |
Contribution: dendrocopos 2015-09-08 |
Locality: Imilchil / Imilchil, Caïdat / Imilchil, Cercle / Midelt, Provinz / Drâa-Tafilalet, Region / Marokko |
Views (File: ): 881
Prehnit auf Quarz Durchmesser der Aggregate ca. 8 mm. Malad Quarry, Mumbai, Maharashtra, Indien. Copyright: skibbo; Contribution: skibbo Location: Indien/Maharashtra/Mumbai (Bombay), Distrikt/Mumbai (Bombay), Stadt/Malad/Steinbruch Kandivali Mineral: Prehnite Image: 1405054560 License: Usage for Mineralienatlas project only |
Prehnit auf Quarz |
Durchmesser der Aggregate ca. 8 mm. Malad Quarry, Mumbai, Maharashtra, Indien. |
Copyright: | skibbo |
Contribution: skibbo 2014-07-11 |
Locality: Steinbruch Kandivali / Malad / Mumbai (Bombay), Stadt / Mumbai (Bombay), Distrikt / Maharashtra / Indien |
Views (File: ): 1857
Prehnit Bildbreite etwa 8 mm; Prehnit in farblosen, prismatischen, gestreiften Einzelkristallen vom Schurf Sankt Johann, Reichenbach, Pfalz. Copyright: Klaus Schäfer; Contribution: Klaus Schäfer Collection: Klaus Schäfer, Collection number: RBa-Prehn-5-1-1 Location: Deutschland/Rheinland-Pfalz/Birkenfeld, Landkreis/Baumholder, Verbandsgem./Reichenbach/Schurf St. Johann Mineral: Prehnite Image: 1460015681 Rating: 9 (votes: 2) License: Usage for Mineralienatlas project only |
Prehnit (SNr: RBa-Prehn-5-1-1) |
Bildbreite etwa 8 mm; Prehnit in farblosen, prismatischen, gestreiften Einzelkristallen vom Schurf Sankt Johann, Reichenbach, Pfalz. |
Collection: | Klaus Schäfer |
Copyright: | Klaus Schäfer |
Contribution: Klaus Schäfer 2016-04-07 |
Locality: Schurf St. Johann / Reichenbach / Baumholder, Verbandsgem. / Birkenfeld, Landkreis / Rheinland-Pfalz / Deutschland |
Views (File: ): 706
Prehnite Prehnite balls with epidote crystals and small ball of stilbite, from Sandaré, Arrondissement Sandaré, Commune Sandaré, Cercle de Nioro du Sahel, Kayes Region, Mali; Size 60 х 58 х 24 mm Copyright: pegmatite; Contribution: pegmatite Collection: pegmatite Location: Mali/Kayes, Region/Nioro du Sahel, Kreis/Sandaré, Commune Mineral: Prehnite Image: 1469460528 Rating: 9 (votes: 1) License: Usage for Mineralienatlas project only |
Prehnite |
Prehnite balls with epidote crystals and small ball of stilbite, from Sandaré, Arrondissement Sandaré, Commune Sandaré, Cercle de Nioro du Sahel, Kayes Region, Mali; Size 60 х 58 х 24 m... |
Collection: | pegmatite |
Copyright: | pegmatite |
Contribution: pegmatite 2016-07-25 |
Locality: Sandaré, Commune / Nioro du Sahel, Kreis / Kayes, Region / Mali |
Views (File: ): 1707
Prehnit Tafelige farblose Kristalle bilden kugelige Aggregate, BB = 6,1 mm, Fundort: Steinbruch Rauschermühle,Niederkirchen,Rheinland-Pfalz,Deutschland. Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter Collection: Lithothek der Münchener Micromounter, Collection number: A001212, Donator: Karoline Meyer Location: Deutschland/Rheinland-Pfalz/Kaiserslautern, Landkreis/Niederkirchen/Steinbruch Rauschermühle Mineral: Prehnite Image: 1370098955 License: Usage for Mineralienatlas project only |
Prehnit (SNr: A001212) |
Tafelige farblose Kristalle bilden kugelige Aggregate, BB = 6,1 mm, Fundort: Steinbruch Rauschermühle,Niederkirchen,Rheinland-Pfalz,Deutschland. |
Collection: | Lithothek der Münchener Micromounter |
Copyright: | Hannes Osterhammer |
Contribution: Münchener Micromounter 2013-06-01 |
Locality: Steinbruch Rauschermühle / Niederkirchen / Kaiserslautern, Landkreis / Rheinland-Pfalz / Deutschland |
Collectors Summary
Color | farblos / hellgrüne Farbtöne überwiegen, d.h. oliv-, apfel-, gelblich-, graugrün; daneben weiß, gelblich, rötlich |
Streak color | weiß |
Lustre | Glasglanz; Perlmuttglanz |
Hardness (Mohs) | 6 - 6.5 |
Cleavages | gut nach {001}; undeutlich nach {110} |
Fracture | uneben |
Solubility | +++ HF, + HCl |
Crystal System | orthorhombisch, P2cm |
Morphology | Aggregate: schalig, nierig-warzig; kugelig-halbkugelig mit radialstrahligem inneren Aufbau; - Kristalle selten und klein - oft verzerrt und gekrümmt, tafelig bis kurzprismatisch; Typisch für Prehnit sind 'hahnenkammartige', aufgeblätterte Kristalle; körnig; Krusten; Pseudomorphosen |
Chemism
Chemical formula |
Ca2Al2Si3O10(OH)2 |
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Chemical composition |
Aluminium, Calcium, Silicium, Sauerstoff, Wasserstoff |
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Analysis wt% |
SiO2 : 42.22, Al2O3 : 24.42, Fe2O3 : 0.81, CaO : 27.55, H2O : 3.88 (Ref: American Mineralogist 71) |
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Strunz 9th edition incl. updates |
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9: Silikate (Germanate) |
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Lapis Classification |
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VIII: SILIKATE |
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Classification by Hölzel |
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9: SILICATES |
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Dana 8th edition |
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72: Phyllosilicates Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings |
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IMA status |
Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt |
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Mineral status |
anerkanntes Mineral |
Optical Properties
Optical Data Luminescence
Crystallography
mm2 |
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Space Group number |
28 |
P2cm |
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Cell parameters a (Å) |
4.64 |
Cell parameters b (Å) |
5.48 |
Cell parameters c (Å) |
18.46 |
Cell parameters a/b or c/a |
0.847 |
Cell parameters c/b |
3.369 |
Cell parameters α |
90° |
Cell parameters β |
90° |
Cell parameters γ |
90° |
Z |
2 |
Volume (ų) |
469.386 |
3.544(40), |
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Calculated from d-spacing and intensity at 0.1541838 nm (Cu) |
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Aggregate: schalig, nierig-warzig; kugelig-halbkugelig mit radialstrahligem inneren Aufbau; - Kristalle selten und klein - oft verzerrt und gekrümmt, tafelig bis kurzprismatisch; Typisch für Prehnit sind 'hahnenkammartige', aufgeblätterte Kristalle; körnig; Krusten; Pseudomorphosen |
Crystals 3D
Open larger view |
Crystal Structure 3D
Open larger view |
Physical Properties
(Co-)Type locality
(Co-)Type locality |
Südafrika/Ostkap (Eastern Cape), Provinz/Chris Hani, Distrikt/Cradock/Karoo Dolerite |
Type material |
Mineralogische Sammlung der TU Bergakademie Freiberg |
Collection number of type material |
101733 / K 137; 101749 / K 138 |
Preface
Varieties
Other languages
Dutch |
Prehniet |
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German |
Prehnit |
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Spanish |
Prehnita |
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English |
Prehnite |
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French |
Prehnite |
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Russian |
Пренит |
Alternative Name
Adelite (of de Fourestier) |
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German |
Adilit |
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Spanish |
Adilita |
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Adilite |
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German |
Aedelit |
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Spanish |
Aedelita |
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Aedelite |
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German |
Aedilit |
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Spanish |
Aedilita |
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Aedilite |
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Bostrichites |
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German |
Chiltonit |
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Spanish |
Chiltonita |
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Chiltonite |
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English |
Chrysolite (Prehnite) |
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Chrysolite (of Sage) |
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French |
Chrysolite du Cap |
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German |
Chrysolith (Prehnit) |
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German |
Coupholit |
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Spanish |
Coupholita |
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Coupholite |
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German |
Edelit |
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Spanish |
Edelita |
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Edelite |
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Prehnitoid (of Bechi) |
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delite (of Walmstedt) |
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Swedish |
Ædelforsit (of Walmstedt) |
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Ædelite (of Walmstedt) |
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Japanese |
ぶどう石 |
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Simplified Chinese |
葡萄石 |
CNMNC symbol
Symbol |
Prh |
Rock part of
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Mineral Dealer
Locations with GPS information
IDs
GUSID (Global unique identifier short form) | s-clOJmWo0KbT2aDvftaUQ |
GUID (Global unique identifier) | 3825E7B3-9699-42A3-9B4F-6683BDFB5A51 |
Database ID | 3122 |