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Offretite & Chabazite Calcite

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MEX1024259

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Description
Locality: 
Bonacker Quarry, Gedern, Wetterau, Darmstadt, Hesse, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.7 × 6.5 × 3.3 cm
Weight: 
168.00gr
Description

Offretite is a rare and beautiful mineral specimen that is adorned with an abundance of white needles of the offretite mineral. These needles are accompanied by small clear chabazite and large white calcite crystals sitting on a basalt matrix. This amazing combination of minerals makes this specimen a true classic, originating from the famous bonacker quarry in the vogelsberg district.

Mineral Data
What's on the rock

Offretite

Formula: 
KCaMgAl5Si13O36·16H2O or near
Strunz: 
9.GD.25
Hardness: 
4.0 - 4.5
Type Locality: 
Mont Semiol (Mont Semiouse; Mont Simiouse), Châtelneuf, Saint-Georges-en-Couzan, Loire, Rhône-Alpes, France

Chabazite

Synonym Of: 

Chabazite-Ca

Formula: 
(Ca,K2,Na2)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 5.0

Chabazite-K

Formula: 
(K2,Ca,Na2,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0

Chabazite-Mg

Formula: 
(Mg0.7K0.5Ca0.5Na0.1)[Al3Si9O24]·10H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 0.0

Chabazite-Na

Formula: 
(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0

Chabazite-Sr

Formula: 
Sr2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 4.5

Calcite

Polymorph of: 
Aragonite and Vaterite
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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Start 03 May 18:00
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Shipping Information

Postage Area Price
Germany
€6
EU+EuropePlus (Zone 1+2)
€15
worldwide (to 500g)
$17
worldwide (to 5kg and El Salvador, ...)
$55
View sellers shipping policy

Seller Shipping Policy update from 05.01.2024

I will ship your specimen in an insured solide cartboard.

Germany (max.2 kg) for 6,-€

EU(1) & EuropePlus(2) (max.2 kg) for 15,-€

Worldwide(3) (max. 500g) for 17,-US$

Worldwide(4) by DHL (max.5 kg) for 55,-US$

A collective buying is possible to each end of the month. The shipping following on second business day, after auction end, and every friday. The tracking code can you find in the order transaction after shipping.

(1)EU:

Denmark (without Greenland and Faröer),

France (without Guadeloupe, Martinique, France-Guayana, La Reunion),

Spain (without Ceuta, Melilla and Canary Islands).

(2) EuropePlus:

Albania, Andorra, Armenia, Azerbaijan, Bosnia Herzegovina, Georgia, Iceland, Kosovo, Liechtenstein, Moldova, Monaco, North Macedonia, Norway, San Marino, Switzerland, Serbia, Turkey, Vatican

(3) worldwide 500g to:

Algeria, Angola, Anguilla, Argentina, Australia, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Benin, Bonaire, Botswana, Brazil, Brunei, Burkina Faso, Burundi, Cambodia, Cameroon, Canada, Canary Islands (Spain), Cap Verde, Cayman Islands, Ceuta (Spain), Chad, China, Colombia, Congo Republic, Djibouti, Dominican Republic, Ecuador, Egypt, Equatorial Guinea, Eritrea, Ethiopia, Faroe Islands, Gabon, Ghana, Greenland, Guatemala, Guinea-Bissau, India, Indonesia, Iraq, Israel, Ivory Coast, Jamaica, Japan, Jordan, Kenya, Kuweit, Kyrgystan, Lebanon, Liberia, Madagascar, Maldives, Mali, Mauritania, Mauritius, Melilla (Spain), Mexico, Mongolia, Mozambique, Myanmar, Namibia, Nepal, Newzealand. Nicaragua, Nigeria, Oman, Pakistan, Paraguay, Peru, Phillipines, Qatar, Rwanda, Saudi Arabia, Senegal, Seychelles, Sierra Leone, Singapore, Solomon, South Africa, South Korea, Sri Lanka, St.Eustatius, St.Lucia, Suriname, Taiwan, Tanzania, Thailand, Togo, Tunisia, Uganda, Ukaraine, Uruguay, USA, Uzebekistan, Vietnam, Zambia, Zimbabwe

(4) worldwide to max. 5 kg and El Salvador, Nordkorea

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