BETA

Sioux Quartzite

Submitted by Raven Mueller on Tue, 2014-07-08 08:37
Stone Type (Commercial): 
Availability: 
Available
Physical Data
Color: 
Munsell Color(s): 
Absorption (%): 
0.15
Density (lb/cf): 
165.00
Flexural Strength, Dry (psi): 
4,550
Flexural Strength, Wet (psi): 
4,160
Modulus of Rupture, Dry (psi): 
5,120
Modulus of Rupture, Wet (psi): 
4,600
Compressive Strength, Dry (psi): 
39,870
Compressive Strength, Wet (psi): 
26,770
Bulk Specific Gravity: 
2.65
Geology
Stone Type (Lithologic): 
Chronostratigraphy: 
Rock Unit: 
Grain Shape: 
Angular
Grain Sorting: 
Well-Sorted
Grain Size: 
Medium
Petrographic Description: 

Specimen: 2014-004

This is a quartzite specimen composed of an interlocking mosaic of quartz grains. The original detrital grains appear to have been rounded and well sorted prior to induration and subsequent metamorphism. Maximum grain size is .9 mm, minimum is .05 mm. The modal size range is from .2 to .5 mm. Grains are well sutured with consertal boundaries, and show no preferential elongation direction. Overgrowth rims are easily identifiable on many grains. Quartz grains overwhelmingly predominate. Grains originating from other siliceous sedimentary rocks, such as chert, contribute less than 1 percent. Opaque grains also occur at random throughout the slide at a frequency under 1 percent. Only a few other accessory minerals (pyroxenes) were noted on the slide. There are no appreciable signs of weathering or alteration visible in the specimen.
7/9/2015 MP

Images

Thin Sections

Click thumbnail for larger image.
Specimen ID Non-polarized Cross-polarized
2014-004-1 Specimen shown in non-polarized light.download image Specimen shown in cross-polarized light.download image
2014-004-2 No image available.
2014-004-3 No image available.
2014-004-4 No image available.

Quarry

NOTE: Quarry locations are approximate.

Jasper Stone Co. Quarry
Jasper , Minnesota
United States
43° 50' 47.2524" N, 96° 23' 36.276" W
Minnesota US

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