BETA

Lueders, Charcoal R.B.

Submitted by Raven Mueller on Tue, 2014-07-08 09:03
Trade Name Alias: 
Stone Type (Commercial): 
Availability: 
Available
Physical Data
Munsell Color(s): 
Absorption (%): 
4.80
Density (lb/cf): 
141.70
Flexural Strength, Dry (psi): 
1,154
Flexural Strength, Wet (psi): 
896
Modulus of Rupture, Dry (psi): 
1,361
Modulus of Rupture, Wet (psi): 
884
Compressive Strength, Dry (psi): 
9,870
Compressive Strength, Wet (psi): 
6,629
Geology
Stone Type (Lithologic): 
Chronostratigraphy: 
Rock Unit: 
Grain Shape: 
Subrounded
Rounded
Grain Sorting: 
Moderately-Sorted
Grain Size: 
Medium
Fine
Petrographic Description: 

Specimen: 2014-020
This specimen is a minimally fossiliferous limestone. The limestone is not grain supported and has a predominantly micrite cement matrix. Allochems comprise about 50 percent of slide area. These criteria define the limestone as a wackestone. Allochem composition is almost completely peloid with a minor amount (<5 percent) of bioclasts. These estimates and degree of sorting identify this limestone as a sparse pelmicrite. Bioclasts are mostly bivalves, but also include micritic walled foraminifera and ostracods. Maximum bioclast dimensions are as follows: bivalve 1 mm, ostracod .7 mm, foraminifera .2 mm. Peloid maximum size is .3 mm and minimum is .08. The modal range for peloids is .1 to .2 mm. These size ranges are commensurate the a faecal origin for most of the peloids. Collophane fragments are quite rare and have a maximum dimension of .5 mm. Extant void space constitutes about 3 percent of slide area in the form of channels and vugs. Maximum vug dimension is 2 mm. Cracks extending from channels are filled with iron oxides/hydroxides (limonite and hematite) and secondary calcite. These channel/cracks extend the length of the slide with a maximum void with of 1.2 mm. Other parallel laminations demarcated by grain size variance and thin lines of oxides are visible in the slide. The relatively un-deformed nature of the allochem component suggests lithification prior to significant compaction.
MP 7/21/2014

Images

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Specimen ID
2014-020 Image of specimen in dry conditions. Finish: Split-faceddownload image Image of specimen in wet conditions. Finish: Split-faceddownload image

Thin Sections

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Specimen ID Non-polarized Cross-polarized
2014-020 Specimen shown in non-polarized light.download image Specimen shown in cross-polarized light.download image

Quarry

NOTE: Quarry locations are approximate.

Lueders Limestone Co. Quarry
14752 State Highway 6
79533 Lueders , Texas
United States
32° 47' 13.1352" N, 99° 35' 50.568" W
Texas US

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