{"id":248372,"date":"2026-09-01T08:40:06","date_gmt":"2026-09-01T07:40:06","guid":{"rendered":"https:\/\/www.marbre-import.fr\/?page_id=248372"},"modified":"2026-09-01T08:40:06","modified_gmt":"2026-09-01T07:40:06","slug":"applied-petrography-field-laboratory-identification","status":"publish","type":"page","link":"https:\/\/www.marbre-import.fr\/en\/natural-stone-encyclopedia\/applied-petrography-field-laboratory-identification\/","title":{"rendered":"Applied Petrography: Field and Laboratory Identification Sheets"},"content":{"rendered":"

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Home<\/a> \/ Natural Stone Encyclopedia<\/a> \/ Applied Petrography: Field and Laboratory Identification Sheets<\/strong><\/div>\n
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Practical identification<\/p>\n

Applied Petrography: Field and Laboratory Identification Sheets<\/h1>\n

Build a repeatable field and laboratory record for natural stone, from site observations and sampling to petrographic classification and project decisions.<\/p>\n

Request expert advice<\/a>View available stone<\/a><\/div>\n<\/div>\n<\/section>\n
\"Field<\/a>
Field and laboratory identification records for natural stone<\/figcaption><\/figure>\n
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Start with the purpose of identification<\/h2>\n

Identification may support a new specification, diagnose deterioration, match a historic stone or investigate a supply dispute. The record should state the question before collecting data.<\/p>\n

Do not infer an exact quarry from appearance alone. Separate observations, test results and interpretations.<\/p>\n<\/section>\n

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Field identification sheet<\/h2>\n

Record location, element, orientation, dimensions, finish, exposure, moisture, staining, cracks, previous repairs and surrounding materials. Photograph overall context and close details with a scale and reference number.<\/p>\n

Describe colour on clean dry and fresh surfaces where permitted. Note bedding, veins, fossils, pores and any metallic or clay-rich features.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
Field<\/th>\nMinimum information<\/th>\n<\/tr>\n<\/thead>\n
Sample reference<\/td>\nUnique code linked to drawings and photographs<\/td>\n<\/tr>\n
Location<\/td>\nBuilding, level, elevation and exact element<\/td>\n<\/tr>\n
Condition<\/td>\nSound, cracked, scaled, stained, damp or repaired<\/td>\n<\/tr>\n
Fabric<\/td>\nGrain, bedding, veins, fossils and pores<\/td>\n<\/tr>\n
Exposure<\/td>\nInterior, exterior, wetting, salts, frost and pollutants<\/td>\n<\/tr>\n
Sampling<\/td>\nMethod, orientation, depth and permissions<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n
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Laboratory identification sheet<\/h2>\n

Record specimen preparation, macroscopic description, mineral composition, texture, pore types, microcracks, alteration and classification. State methods and limits.<\/p>\n

If physical tests are performed, link every result to the sample orientation and conditioning. Avoid combining values from unrelated sources as if they described one material.<\/p>\n<\/section>\n

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Chain of custody and traceability<\/h2>\n

Seal and label samples, keep a register of transfers and retain offcuts where possible. For heritage or dispute work, an auditable chain prevents confusion between similar specimens.<\/p>\n

Digital files should use the same codes as bags, slides, photographs, drawings and reports.<\/p>\n<\/section>\n

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Turning observations into decisions<\/h2>\n

Conclude at the level supported by evidence: geological family, probable source region, compatibility or need for further testing. State uncertainty explicitly.<\/p>\n

Use the record to guide selection, repair mortar, cleaning trials, replacement stone or engineering assessment. Identification is the foundation of the decision, not the decision itself.<\/p>\n<\/section>\n

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Need advice for a real project?<\/h2>\n

Marble Import supports international homeowners, architects and interior designers with stone selection, samples, technical feasibility and coordination of high-end stonework in France and across Europe.<\/p>\n

Request a quotation<\/a>Contact our team<\/a><\/div>\n<\/section>\n<\/div>\n
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Related natural-stone guides and services<\/h2>\n

Continue with the technical guides and project resources most closely connected with this subject.<\/p>\n

Marble and natural stone specialist in France<\/a>Natural Stone Encyclopedia<\/a>Contact Marbre Import<\/a>Marble and Natural-Stone Glossary<\/a>Petrography and Laboratory Identification of Natural Stone<\/a>Natural-Stone Families: Marble, Granite, Limestone and More<\/a>How to Assess and Select Quality Marble and Natural Stone<\/a>Natural-Stone Colour, Veining and Light<\/a>Natural Stone, Porcelain, Engineered Quartz, Terrazzo, Concrete and Timber Compared<\/a>Natural Stone, Engineered Stone and Reconstituted Stone Compared<\/a>Read the natural-stone blog<\/a>Natural stone for private clients<\/a>Resources for architects and professionals<\/a>Request a project quotation<\/a>Browse available marble and natural stone<\/a>Independent natural-stone consulting<\/a><\/div>\n<\/section>\n

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Create reliable field and laboratory identification sheets for natural stone, including sampling, observations, traceability and interpretation.<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":248269,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","_uag_custom_page_level_css":"","footnotes":""},"class_list":["post-248372","page","type-page","status-publish","hentry"],"acf":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"et-pb-post-main-image":false,"et-pb-post-main-image-fullwidth":false,"et-pb-portfolio-image":false,"et-pb-portfolio-module-image":false,"et-pb-portfolio-image-single":false,"et-pb-gallery-module-image-portrait":false,"et-pb-post-main-image-fullwidth-large":false,"et-pb-image--responsive--desktop":false,"et-pb-image--responsive--tablet":false,"et-pb-image--responsive--phone":false},"uagb_author_info":{"display_name":"Nicolas Roudey","author_link":"https:\/\/www.marbre-import.fr\/en\/author\/qe0jqt2016ines\/"},"uagb_comment_info":0,"uagb_excerpt":"Create reliable field and laboratory identification sheets for natural stone, including sampling, observations, traceability and interpretation.","_links":{"self":[{"href":"https:\/\/www.marbre-import.fr\/en\/wp-json\/wp\/v2\/pages\/248372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.marbre-import.fr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.marbre-import.fr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.marbre-import.fr\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.marbre-import.fr\/en\/wp-json\/wp\/v2\/comments?post=248372"}],"version-history":[{"count":2,"href":"https:\/\/www.marbre-import.fr\/en\/wp-json\/wp\/v2\/pages\/248372\/revisions"}],"predecessor-version":[{"id":248682,"href":"https:\/\/www.marbre-import.fr\/en\/wp-json\/wp\/v2\/pages\/248372\/revisions\/248682"}],"up":[{"embeddable":true,"href":"https:\/\/www.marbre-import.fr\/en\/wp-json\/wp\/v2\/pages\/248269"}],"wp:attachment":[{"href":"https:\/\/www.marbre-import.fr\/en\/wp-json\/wp\/v2\/media?parent=248372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}