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While externally similar shapes, these two minerals are very different inside.
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Chert from
Grand Reef Mine, Laurel Canyon, Grand Reef Mountain, Klondyke, Aravaipa Mining District, Graham County, Arizona, USA


Locality type:Mine
Classification
Type:Chert
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chert data
Locality Data:Click here to view Grand Reef Mine, Laurel Canyon, Grand Reef Mountain, Klondyke, Aravaipa Mining District, Graham County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:1706248
Long-form Identifier:1:3:1706248:8
GUID (UUID V4):0
Nearest other occurrences of Chert
34.3km (21.3 miles) ⓘWhite Cliffs Mine, Whitlock Wash area, Pinal County, Arizona, USA
50.5km (31.4 miles) ⓘ79 Mine, Chilito, Hayden area, Banner Mining District, Gila County, Arizona, USA
64.9km (40.3 miles) ⓘSolomon deposit (Solomonville Diatomite; Solomonville deposits), Solomon Pass, Lone Star Mining District (Safford Mining District; Dos Pobres Mining District), Graham County, Arizona, USA
71.8km (44.6 miles) ⓘIreland Mine (Ireland shaft; Silver Star Lead property), Black Peak area, Copper Hill, Globe Hills Mining District, Gila County, Arizona, USA
81.9km (50.9 miles) ⓘGila River placers (Dorothy B claims; Gold Spot claim; Red Bird claim; Bonny claim; Gold Nugget claim; Banner claim; Neel placers), Gila River, Graham County, Arizona, USA
96.7km (60.1 miles) ⓘVictory and Eldorado Mines, Chrysotile area, Chrysotile, Salt River Mining District, Gila County, Arizona, USA
References
Locality descriptionIdentification: Visual Identification
 
and/or  
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