BETA

Lueders, Buff

Submitted by Raven Mueller on Tue, 2014-07-08 08:56
Stone Type (Commercial): 
Availability: 
Available
Physical Data
Color: 
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: 
Poorly-Sorted
Grain Size: 
Coarse
Medium
Petrographic Description: 

Specimen: 2014-019
This specimen is a fossiliferous limestone. The limestone is grain supported with a predominantly micrite cement matrix. Allochems comprise around 70 percent of slide area. These critieria define the limestone as a packstone. Allochem composition is almost completely bioclast. These estimates and degree of sorting characterize the limestone as a packed biomicrite. Abundant bioclasts include bivalves, based on shell morphology and wave extinction; brachiopods, including shell and spine parts, a variety of echinoderm parts, bryozoans, and likely others. Maximum dimensions for several varieties of bioclast are as follows: bivalve 1.8 mm, brachiopod shell 3 mm, brachiopod spine .6 mm, bryozoan 3 mm, echinoderm-crinoid 1.5 mm. The modal size of maximum dimensions is around .5 to 75 mm. The slide also contains rare, likely authigenic quartz grains with a maximum dimension of .15 mm. Most quartz grains are .04 to .08 mm in size. Collophane fragments, presumably of biological origin are rarely present and have a maximum dimension of .6 mm. There are no appreciable extant voids in this specimen. The well preserved form of most fossils suggests lithification prior to significant compaction. Fossils can be identified in the hand samples with difficulty.
MP 7/21/2015

Images

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Specimen ID
2014-019 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
2014-019 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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