Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Phosphorite from
Occurrence (MRDS 10082060), Dubuque, Dubuque County, Iowa, USA


Locality type:Occurrence
Classification
Type:Phosphorite
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Phosphorite data
Locality Data:Click here to view Occurrence (MRDS 10082060), Dubuque, Dubuque County, Iowa, USA
Data Identifiers
Mindat Occurrence Record ID:1016366
Long-form Identifier:1:3:1016366:3
GUID (UUID V4):0
Nearest other occurrences of Phosphorite
1.8km (1.1 miles) ⓘRoadcut (MRDS 10082059), Dubuque, Dubuque County, Iowa, USA
5.6km (3.5 miles) ⓘCreek Bank, Dubuque County, Iowa, USA
6.6km (4.1 miles) ⓘStream Bank, Dubuque County, Iowa, USA
10.4km (6.5 miles) ⓘExcavation Site, Dubuque County, Iowa, USA
13.3km (8.2 miles) ⓘRoadcut (MRDS 10082056), Dubuque County, Iowa, USA
17.5km (10.9 miles) ⓘUnnamed Outcrop, Jackson County, Iowa, USA
34.6km (21.5 miles) ⓘQuarry (MRDS 10082054), Clayton County, Iowa, USA
40.0km (24.8 miles) ⓘOutcrop (MRDS 10100307), Clayton County, Iowa, USA
44.2km (27.5 miles) ⓘRoadcut (MRDS 10082053), Clayton County, Iowa, USA
52.0km (32.3 miles) ⓘRoadcut (MRDS 10082051), Clayton County, Iowa, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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