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Chalcedony & Limonite Psm Fossil Stromatolite

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CLB183816

Chalcedony & Limonite Psm Fossil Stromatolite

Pseudomorph

Description Tabs

Description
Locality: 
Meisenheim, Bad Kreuznach, Rhineland-Palatinate, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
17.4 × 11 × 1.7 cm
Description

This is a cut and polished slice of a petrified stromatolite built by blue algae. The fossil was replaced by chalcedony and limonite, possibly with a high manganese content.

Mineral Data
What's on the rock

Chalcedony

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Kadıköy (Chalcedon), Istanbul Province, Marmara Region, Turkey

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