Zeolites and other Minerals at Gran Canaria

(3) Barranco de Agaete (4) Lomo de los Pinios
Top: A Stilbite specimen (45 mm) from Barranco de Agaete, just south of the town. The steep walls of the Barranco show vugs up to over 10 cm, lined with Stilbite up to about 2 cm. The walls of this Barranco show partly young lava at the north side and old basalts at the south. Stilbite is only present in the old rock.
Right:

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(5) Vuelta de Onero
	About 100 m after the road GC200 enters in the Barranco de Guayedra, a hinking path leads to the beach named

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(6) Barranco de Guayedra

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(7) Barranco de la Palma

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(8) Farralon de Segura

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(9) Faneroquito





Epistilbite with Cbabazite.

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(10) Fuente del Viento

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(11) Laja del Risco

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(12) Hoja del Tabaibal

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(13) Lomo de la Aulaga

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(14) Barranco de Güigüi Grande

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(15) Anden Verde



View from Anden Verde in north-east direction towards Puerto de las Nieves. Lomo de los Augillios in foreground and Risco Risco Faneque (1933 m) at right. This steep cost is a result of erosion. The only access is the GC 200 at right.

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(16) Hill 548 south of Montana Cerrada

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(17+ 18) Puerto de la Aldea

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(19) Barranqillo Santo

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(20) Tocodoman

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(21) Road Cut, GC204

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(22) Camino de la Playa del Asno, Tasarticio

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(23) Degollada de Veneguera

Cavity in the the Basat at Degollade de Veneguera lined with Analcim and "Mesotype" (Natrolite ore Mesolite). Field of view is about 20 mm.

Dellogada de Veneguera is the place which was first mentioned as a zeolite-location by Leopold von Buch (1825). During his one month lasting walking trip over Gran Canaria in 1815, he passed this place and wrote: Von Aldea gegen Mogan...Auf einer flachen Scheideck zwischen den Tälern von Tazarte und Veneguera, welche 2100 Fuß hoch liegt, wird dieser Mandelstein gar prachtvoll und herrlich. Die Blasen sind langezogen, gross, eckig und überall mit den trefflichsten Drusen von Analcim bedeckt, in glänzenden, zum Theil durchsichtigen Kristallen und in der vollständigsten Leucitform. Über diese Kristalle erheben sich Kugeln und Nieren von feinfasrig auseinenderlaufendem Mesotyp, aus denen an den Enden die Kristallspitzen frei hervorstehen....

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(24) El Manantial, Tasarte

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(25) Lomo de Veneguera

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(26) Barranco de Taurito (27) Barranco de Los Medios Almudes

Moganite occures at several places east of the Mogan Valley in the Ignimbrites (Type location). The specimen (50 mm) at left is from Barranco de Taurito, those at right (40 mm) from Barranco de Los Medios Almudes. Both are mixtures with Chalcedone.

Zeolites and other Minerals, Gran Canaria by Volker Betz
Canary Islands- Lanzarote Fuerteventura Gran Canaria Teneriffa La Gomera La Palma El Hierro Paragenesis Literature
1 Arucas 2 Agaete 3 Barranco de Agaete 4 Lomo de los Pinios 5 Vuelta de Onero 6 Barranco de Guayedra 7 Barranco de la Palma 8 Farralon de Segura 9 Faneroquito 10 Fuente del Viento 11 Laja del Risco 12 Hoja del Tabaibal 13 Lomo de la Aulaga 14 Barranco de Güigüi Grande 15 Anden Verde 16 Hill 548 south Montana Cerrada 17+18 Puerto de la Aldea 19 Barranqillo Santo 20 Tocodoman 21 Road Cut, GC204 22 Camino, Tasarticio 23 Degollada de Veneguera 24 El Manantial 25 Lomo de Veneguera 26 Barranco de Taurito 27 Barranco de Los Medios Almudes ***** Home**		Map showing the distribution of the shield basalt group at Gran Canaria (after Bogaard& Schminke, 1998). Also showing the GC200 road connecting Agaete and Mogan along the scenic west coast with occurrences near the road mostly in the (old) shield basalts.
	Under Construction	Under Construction

(2) Agaete
Chabazite in a small vug lined with Heulandite. Specimen of 30 mm from Montaña Blanca just north of Agaete. Right: A note printed in Neues Jahrbuch Mineralogie from 1870, refering to Calcite and "Desmin" = Stilbite and Chabazite from Agaete. Hessenbergs pictures are reprinted in Goldschmidts Atlas der Kristallformen.

(1)Arucas