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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Chalcedony from
Ardownie Quarry, Monifieth, Angus, Scotland, UK


05156560017272008029055.jpg
Agate

Ardownie Quarry, Monifieth, Angus, Scotland, UK
04585630017272008189265.jpg
Agate

Ardownie Quarry, Monifieth, Angus, Scotland, UK
08949530017272008196852.jpg
Agate

Ardownie Quarry, Monifieth, Angus, Scotland, UK
06699320017272008217322.jpg
Agate

Ardownie Quarry, Monifieth, Angus, Scotland, UK
05156560017272008029055.jpg
Agate

Ardownie Quarry, Monifieth, Angus, Scotland, UK
04585630017272008189265.jpg
Agate

Ardownie Quarry, Monifieth, Angus, Scotland, UK
08949530017272008196852.jpg
Agate

Ardownie Quarry, Monifieth, Angus, Scotland, UK
06699320017272008217322.jpg
Agate

Ardownie Quarry, Monifieth, Angus, Scotland, UK
01753260017272354656893.jpg
Agate

Ardownie Quarry, Monifieth, Angus, Scotland, UK
04585630017272008189265.jpg
Agate

Ardownie Quarry, Monifieth, Angus, Scotland, UK
08949530017272008196852.jpg
Agate

Ardownie Quarry, Monifieth, Angus, Scotland, UK
06699320017272008217322.jpg
Agate

Ardownie Quarry, Monifieth, Angus, Scotland, UK
Locality type:Quarry
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Ardownie Quarry, Monifieth, Angus, Scotland, UK
Data Identifiers
Mindat Occurrence Record ID:15776
Long-form Identifier:1:3:15776:0
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
0.6km (0.4 miles) ⓘEthiebeaton Quarry, Monifieth, Angus, Scotland, UK
4.2km (2.6 miles) ⓘCar' Hills (Downie Hills), Angus, Scotland, UK
6.3km (3.9 miles) ⓘPanmure Den, Angus, Scotland, UK
11.7km (7.3 miles) ⓘBalgray and Blackness Hills, Dundee City, Scotland, UK
16.7km (10.4 miles) ⓘShore of the Tay, Fife, Scotland, UK
21.7km (13.5 miles) ⓘMiddlefield Farm, Cupar, Fife, Scotland, UK
21.8km (13.5 miles) ⓘLuthrie, Fife, Scotland, UK
22.2km (13.8 miles) ⓘHeather Hill, Luthrie, Fife, Scotland, UK
23.4km (14.5 miles) ⓘAgate Knowe, Tinketop, Ballindean, Inchture, Perth and Kinross, Scotland, UK
23.6km (14.7 miles) ⓘBalmeadowside, Luthrie, Fife, Scotland, UK
References
Ingram, S. M. (1994) Agates from Ardownie quarry, Monifieth, Tayside, Scotland. UK Journal of Mines and Minerals 14, 17-20
 
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