Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Heulandite

Views:
Watches:
QRI944331

Heulandite

With Antique Label

Description Tabs

Description
Locality: 
Fassa Valley, Trento Province, Trentino-Alto Adige, Italy
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.6 × 6.7 × 4.9 cm
Largest Crystal: 
1.50cm
Weight: 
399.00gr
Description

Sizeable cabinet consisting of a thick coverage of intimately intergrown white heulandite crystals of good quality and lustre, with a partial coverage of fine green-blue celadonite.
The specimen is rather contrastful and large for the locality. It comes with an old handwritten label in German and a pasted one on the rock itself. 
Very sought-after material.

Mineral Data
What's on the rock

Heulandite

Synonym Of: 

Heulandite-Ba

Formula: 
(Ba,Ca,K,Na,Sr)5Al9Si27O72·22H2O
Strunz: 
9.GE.05
Hardness: 
3.5

Heulandite-Ca

Formula: 
(Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.5 - 4.0

Heulandite-K

Formula: 
(K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5

Heulandite-Na

Formula: 
(Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5

Heulandite-Sr

Formula: 
(Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5
Hardness: 
3 - 3.5
Colour: 
White
Streak: 
White

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

Shipping within 15 days after payment received, unless specified/agreed otherwise.

Combined shipping is possible, please inquire for details.