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โ‡ฑ GRN grid region: N27W59


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GRN grid region: N27W59

A grid 'square' of approximately 160km x 160km, part of the Global Reference Network of 19,833 grid cells covering the Earth.


Northeast Corner:
40 30'0'' N , 105 11'41'' W ( 40.5,-105.195 )
Southwest Corner:
39 0'0'' N , 107 0'28'' W ( 39,-107.008 )

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


496 valid minerals. 12 (TL) - type locality of valid minerals. 3 (FRL) - first recorded locality of unapproved mineral/variety/etc.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

โ“˜ Alluvial deposit

โ“˜ Amphibolite

โ“˜ Andesite

โ“˜ 'Aplite'

โ“˜ 'Aplitic granite'

โ“˜ 'Augen gneiss'

โ“˜ Basalt

โ“˜ Basanite

โ“˜ 'Biotite gneiss'

โ“˜ 'Biotite schist'

โ“˜ Breccia

โ“˜ Chert

โ“˜ Clastic sedimentary rock

โ“˜ Clay

โ“˜ Claystone

โ“˜ Coarse-grained ("plutonic") crystalline igneous rock

โ“˜ Conglomerate

โ“˜ Dacite

โ“˜ Diorite

โ“˜ 'Dolerite'

โ“˜ Dolostone

โ“˜ Fine-grained ("volcanic") normal crystalline igneous rock

โ“˜ 'Flint'

โ“˜ Gneiss

โ“˜ Granite

โ“˜ 'Granitic gneiss'

โ“˜ Granodiorite

โ“˜ 'Graphic granite'

โ“˜ Gravel

โ“˜ Greisen

โ“˜ Greywacke

โ“˜ Hornblendite

โ“˜ Hornfels

โ“˜ Humic coal series

โ“˜ 'Jasper'

โ“˜ Kimberlite

โ“˜ Lacustrine deposit

โ“˜ Lamproite

โ“˜ Limestone

โ“˜ Metagabbro

โ“˜ Metamorphic rock

โ“˜ Metasedimentary rock

โ“˜ 'Mica schist'

โ“˜ Migmatite

โ“˜ Monzogranite

โ“˜ Monzonite

โ“˜ Mud

โ“˜ Mudstone

โ“˜ Mylonite

โ“˜ Peat

โ“˜ 'Pegmatite'

โ“˜ 'Porphyry'

โ“˜ Pumice

โ“˜ 'Quartz porphyry'

โ“˜ 'Quartz schist'

โ“˜ Quartz-diorite

โ“˜ Quartz-latite

โ“˜ Quartz-monzonite

โ“˜ Quartzite

โ“˜ Rhyodacite

โ“˜ Rhyolite

โ“˜ Sand

โ“˜ Sandstone

โ“˜ 'Schalenblende'

โ“˜ Schist

โ“˜ Sedimentary breccia

โ“˜ Sedimentary rock

โ“˜ Shale

โ“˜ Silt

โ“˜ Siltstone

โ“˜ Syenite

โ“˜ Syenogranite

โ“˜ 'Tactite'

โ“˜ 'Till'

โ“˜ Tonalite

โ“˜ Trachytoid

โ“˜ Tuff

โ“˜ 'Uintahite'

Localities within Grid Area

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To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833โ€“844. doi:10.2138/am-2024-9486.
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