Standard Test Method for Mineral Characterization of Equine Surface Materials by X-Ray Diffraction (XRD) Techniques

SIGNIFICANCE AND USE
5.1 Petrographic examinations are made for the following purposes:  
5.1.1 To determine the mineralogy of the material that may be observed by petrographic methods (in this method, by use of XRD) and that may have a bearing on the performance of the material in its intended use.  
5.1.2 To determine the relative amounts of the constituents of the sample which is essential for proper evaluation of the sample when the constituents may differ significantly in properties that have a bearing on the performance of the material in its intended use.  
5.1.3 This method helps to evaluate mineral aggregate sources for suitability as a material to be used for construction, renovation, or modification of equine surfaces. The information gathered will allow for the comparison of the composition of new mineral sources with samples of other mineral aggregate from one or more sources, for which test data or performance records are available.  
5.2 This method may be used by a petrographer employed directly by those for whom the examination is made. The employer should tell the petrographer, in as much detail as necessary, the purposes and objectives of the examination, the kind of information needed, and the extent of examination desired. Pertinent background information, including results of prior testing, should be made available. The petrographer’s advice and judgment should be sought regarding the extent of the examination.  
5.3 This method may form the basis for establishing arrangements between a purchaser of consulting petrographic service and the petrographer. In such a case, the purchaser and the consultant should together determine the kind, extent, and objectives of the examination and analyses to be made and should record their agreement in writing. The agreement may stipulate specific determinations to be made, observations to be reported, funds to be obligated, or a combination of these or other conditions.
SCOPE
1.1 X-Ray diffraction (XRD) is a tool for identifying minerals, such as quartz and feldspar, and types of clay present in bulk samples of equine surfaces. Determining the mineralogy of a given bulk sample provides insight into surface properties, such as abrasion resistance by comparing the relative differences of hardness of the various mineral fractions such as quartz or feldspar or the plasticity differences in clay minerals such as smectite or kaolinite. XRD techniques are qualitative in nature and only semi-quantitative.  
1.2 Particle size distribution analyses methods including hydrometer tests to determine proportions of sand, silt, and clay fractions based upon particle size but are not able to distinguish particles by shape or mineralogy of materials. In addition to a qualitative detection of minerals present in a sample, XRD methods are also semi-quantitative and also yield important data on the relative proportion of particular minerals present.  
1.3 XRD techniques are generally semi-quantitative in nature. Even so, such semiquantitative data is useful in determining relative proportions of each mineral type. This method is also semi-qualitative in nature as it is geared for the determination or mineral groups. For example, it will determine the relative amount of alkali feldspars (such as K-feldspar or Nafeldspar) from Plagioclase-feldspar but not necessarily if the Plagioclase-feldspar is albite or anorthite nor whether the K-feldspar is orthoclase of microcline. Likewise, it will differentiate smectite from mica from kaolinite but not whether the smectite is montmorillonite or saponite. More precise determination of mineral species by XRD is possible but involves more advanced preparation and treatment methods than what is within the scope of this standard.  
1.4 The XRD method herein primarily makes use of “Glass Slide Method” but may be subject to modification depending on the user’s needs.  
1.5 This standard does not purport to address all of the safety c...

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ASTM F3419-22 - Standard Test Method for Mineral Characterization of Equine Surface Materials by X-Ray Diffraction (XRD) Techniques
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F3419 − 22
Standard Test Method for
Mineral Characterization of Equine Surface Materials by
1
X-Ray Diffraction (XRD) Techniques
This standard is issued under the fixed designation F3419; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 X-Ray diffraction (XRD) is a tool for identifying
responsibility of the user of this standard to establish appro-
minerals, such as quartz and feldspar, and types of clay present
priate safety, health, and environmental practices and deter-
in bulk samples of equine surfaces. Determining the mineral-
mine the applicability of regulatory limitations prior to use.
ogy of a given bulk sample provides insight into surface
1.6 This international standard was developed in accor-
properties, such as abrasion resistance by comparing the
dance with internationally recognized principles on standard-
relative differences of hardness of the various mineral fractions
ization established in the Decision on Principles for the
such as quartz or feldspar or the plasticity differences in clay
Development of International Standards, Guides and Recom-
minerals such as smectite or kaolinite. XRD techniques are
mendations issued by the World Trade Organization Technical
qualitative in nature and only semi-quantitative.
Barriers to Trade (TBT) Committee.
1.2 Particle size distribution analyses methods including
hydrometer tests to determine proportions of sand, silt, and
2. Referenced Documents
clay fractions based upon particle size but are not able to 2
2.1 ASTM Standards:
distinguish particles by shape or mineralogy of materials. In
D75 Practice for Sampling Aggregates
addition to a qualitative detection of minerals present in a
F3401 Test Method for Wax Binder Removal from Eques-
sample,XRDmethodsarealsosemi-quantitativeandalsoyield
trian Synthetic Track Surfaces
important data on the relative proportion of particular minerals
present.
3. Terminology
1.3 XRD techniques are generally semi-quantitative in na-
3.1 Definitions:
ture. Even so, such semiquantitative data is useful in determin-
3.1.1 clay fraction, n—a less than 4 µm Equivalent Spheri-
ing relative proportions of each mineral type. This method is
cal Diameter (ESD) fraction of the sample.
also semi-qualitative in nature as it is geared for the determi-
3.1.1.1 Discussion—Clay size in many classification sys-
nation or mineral groups. For example, it will determine the
tems is the <2 µm fraction but for the purposes of this method
relative amount of alkali feldspars (such as K-feldspar or
the<4µm size is used. Also, the clay fraction does not
Nafeldspar)fromPlagioclase-feldsparbutnotnecessarilyifthe
necessarily mean clay minerals (phyllosilicates) but rather it is
Plagioclase-feldspar is albite or anorthite nor whether the
a size term and, as such, this size fraction includes non-clay
K-feldspar is orthoclase of microcline. Likewise, it will differ-
minerals (quartz, plagioclase, etc.). This size fraction is used
entiate smectite from mica from kaolinite but not whether the
because it also typically contains abundant clay minerals.
smectite is montmorillonite or saponite. More precise determi-
3.1.2 petrography, n—branch of petrology that focuses on
nation of mineral species by XRD is possible but involves
the detailed description and classification of minerals, rocks,
moreadvancedpreparationandtreatmentmethodsthanwhatis
sands, and soils.
within the scope of this standard.
3.1.3 solid solution, n—a homogeneous solid phase capable
1.4 The XRD method herein primarily makes use of “Glass
of existing throughout a range of chemical composition.
Slide Method” but may be subject to modification depending
3.1.4 X-ray diffraction (XRD), n—a rapid analytical tech-
on the user’s needs.
nique primarily used for phase identification of a crystalline
material and for determining unit cell dimensions.
1
This test method is under the jurisdiction of ASTM Committee F08 on Sports
2
Equipment, Playing Surfaces, and Facilities and is the direct responsibility of For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Subcommittee F08.28 on Equestrian Surfaces. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Sept. 1, 2022. Published September 2022. DOI: Standards volume information, refer to
...

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