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Lueders, Charcoal

Submitted by Raven Mueller on Thu, 2014-07-10 09:48
Trade Name Alias: 
Stone Type (Commercial): 
Availability: 
Available
Physical Data
Color: 
Munsell Color(s): 
Absorption (%): 
6.30
Modulus of Rupture, Dry (psi): 
1,277
Compressive Strength, Dry (psi): 
6,560
Geology
Stone Type (Lithologic): 
Chronostratigraphy: 
Rock Unit: 
Grain Shape: 
Subrounded
Rounded
Grain Sorting: 
Poorly-Sorted
Grain Size: 
Coarse
Medium
Petrographic Description: 

Specimen: 2014-048
This is a fossiliferous limestone. The limestone is grain supported with a cement matrix that is near equal parts sparite and micrite. The patchy texture of the cement matrix suggests some amount of neomorphism. Allochems constitute about 80 percent of slide area. These criteria indicate the limestone is best described as a packstone. Allochem composition is about 55 percent peloid, 40 percent ooid, and 5 percent bioclast. These estimates and the degree of sorting indicate this limestone is an unsorted oosparite or oomicrite. Micritic envelopes are pronounced. Identifiable bioclast maximum dimensions are as follows: bivalve 3.2 mm, ostracod .6 mm, univalve mollusk .6 mm, and calcispheres .15. Bivalve fragments are the most common with fragments completely replaced by consertal calcite. Larger fossils than those captured on this slide are macroscopically visible in the hand sample. The size range of ooids and peloids is similar with a maximum near .4 mm, a minimum of .1 mm, and a modal range around .3 mm. Collophane is also present and has a maximum size near .8 mm. Iron hydroxides and opaque grains are far less than 1 percent of slide area. Extant voids constitute far less than 1 percent of slide area and are mostly vug like with a maximum dimension near .75 mm. Given the degree of allochem preservation and spacing, lithification likely occurred prior to compaction.
MP 7/21/2015

Images

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Specimen ID
2014-048 Image of specimen in dry conditions. Finish: download image Close-up image of specimen in dry conditions. Finish: download image Image of specimen in wet conditions. Finish: download image Close-up image of specimen in wet conditions. Finish: download image

Thin Sections

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Specimen ID Non-polarized Cross-polarized
2014-048 Specimen shown in non-polarized light.download image Specimen shown in cross-polarized light.download image

Quarry

NOTE: Quarry locations are approximate.

Lueders Limestone Quarry (Continental Quarries, Inc.)
Florence , Texas
United States
32° 49' 51.1068" N, 99° 35' 36.744" W
Texas US

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