BETA

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Lueders

Submitted by Raven Mueller on Thu, 2014-07-10 09:29
Stone Type (Commercial): 
Availability: 
Available
Physical Data
Color: 
Munsell Color(s): 
Geology
Stone Type (Lithologic): 
Chronostratigraphy: 
Rock Unit: 
Grain Shape: 
Subrounded
Rounded
Grain Sorting: 
Poorly-Sorted
Grain Size: 
Medium
Fine
Petrographic Description: 

Specimen: 2014-041
This is a minimally fossiliferous limestone. The limestone is grain supported and has a predominantly micrite cement matrix. Allochems constitute about 75 percent of slide area. These characteristics classify the limestone as a packstone. Allochem composition is about 85 percent peloid and 15 percent bioclast. These estimates and degree of sorting classify this limestone as a packed pelmicrite. Peloids have a maximum dimension near .5 mm and a modal range around .15 mm. A significant majority of peloids are commensurate with a faecal origin. The ease of peloid identification varies across the slide and boundaries are often indistinct. Bioclasts are predominantly calcispheres with a modal size around .15 mm. Other bioclasts are quite rare and include echinoderm and bivalves, both with a maximum dimension around 1.6 mm. Areas of consertal sparite, some within micrite envelopes, may represent infilling of other fossils that are no longer identifiable. Other inclusions include very rare collophane with a maximum dimension around .6 mm and authigenic quartz with a modal size around .1 mm. About 3 percent of allochems are stained by iron oxyhydroxides, which impart a yellowish color to the hand sample. Extant voids are essentially absent. Compaction is difficult to discern but the loss of some peloid form may indicate moderate levels prior to lithification.
MP 7/21/2014

Comments

Submitted by Raven Mueller on Thu, 2014-07-10 09:31

Lueders is quarried by Hunter's Texas Stone, a division of Continental Cut Stone.

Images

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Specimen ID
2014-041 Image of specimen in dry conditions. Finish: Smooth sawndownload image Close-up image of specimen in dry conditions. Finish: Smooth sawndownload image Image of specimen in wet conditions. Finish: Smooth sawndownload image Close-up image of specimen in wet conditions. Finish: Smooth sawndownload image

Thin Sections

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Specimen ID Non-polarized Cross-polarized
2014-041 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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