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While externally similar shapes, these two minerals are very different inside.
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Annabergite from
Anna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany


Locality type:Colliery
Classification
Species:Annabergite
Formula:Ni3(AsO4)2 · 8H2O
Habit:crusts and microscopic crystals (rarely) on millerite
Colour:green
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Annabergite data
Locality Data:Click here to view Anna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:85563
Long-form Identifier:1:3:85563:1
GUID (UUID V4):0
Nearest other occurrences of Annabergite
13.9km (8.7 miles) ⓘEmma-Hendrik coal dump, Brunssum, Limburg, Netherlands
24.5km (15.2 miles) ⓘMaubacher Bleiberg, HÞrtgenwald, DÞren, Cologne, North Rhine-Westphalia, Germany
71.4km (44.4 miles) ⓘHoffnung Mine (Spes Mine), Martinsknipp, AhrbrÞck, Altenahr, Ahrweiler, Rhineland-Palatinate, Germany
72.5km (45.1 miles) ⓘVersÃķhnung Mine, Altenrath, Troisdorf, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
84.0km (52.2 miles) ⓘCastor Mine, Loope, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
87.9km (54.6 miles) ⓘSilberkaule Mine, Heckhaus, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
99.7km (62.0 miles) ⓘLouise Mine, BÞrdenbach, Altenkirchen-Flammersfeld, Altenkirchen, Rhineland-Palatinate, Germany
References
Maas, H. H. (1977) Neuere Mineralienfunde im Aachener Steinkohlenrevier. Der Aufschluss, 28 (2) 69-73
 
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