{"id":1904,"date":"2026-06-19T10:38:14","date_gmt":"2026-06-19T08:38:14","guid":{"rendered":"https:\/\/mineralien-weltweit.com\/product\/sand-calcite-malyi-clay-pit-hungary\/"},"modified":"2026-06-19T10:38:14","modified_gmt":"2026-06-19T08:38:14","slug":"sand-calcite-malyi-clay-pit-hungary","status":"publish","type":"product","link":"https:\/\/mineralien-weltweit.com\/en\/product\/sand-calcite-malyi-clay-pit-hungary\/","title":{"rendered":"Sand Calcite from the M\u00e1lyi Clay Pit, Hungary"},"content":{"rendered":"

This sand calcite specimen comes from the M\u00e1lyi clay pit near Miskolc in Borsod-Aba\u00faj-Zempl\u00e9n County, Hungary. Numerous rounded to nodular aggregates are intergrown into a three-dimensional, branching group. <\/p>\n

The individual aggregates show spherical to bubble-like forms and in places resemble a chain or a grape-like cluster. Their surfaces are matte and have a sandy texture. The color ranges from sandy white through cream to beige. <\/p>\n

Measuring 8.5 \u00d7 6.5 \u00d7 5.0 cm, the piece belongs to the cabinet specimen size category.<\/p>\n

Formation of Sand Calcite from M\u00e1lyi<\/h3>\n

The M\u00e1lyi clay pit exposes Pannonian clay, silt, and sand sediments. Characteristic intergrown sand calcite nodules and rounded aggregates are known from the locality. <\/p>\n

The aggregates formed within unconsolidated sediments through the precipitation of calcite from mineral-bearing pore waters. During growth, numerous sand grains were incorporated into the calcite. The calcite acted as a mineral cement, consolidating the surrounding sediment into the rounded forms visible today. <\/p>\n

The unusual three-dimensional habit, matte sandy surface, and documented provenance make this piece a characteristic sand calcite specimen from M\u00e1lyi.<\/p>\n

\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Feature <\/th>\nDetails<\/th>\n<\/tr>\n<\/thead>\n
Mineral<\/td>\nCalcite<\/td>\n<\/tr>\n
Variety<\/td>\nSand calcite<\/td>\n<\/tr>\n
Chemical Composition<\/td>\nCalcium carbonate, CaCO\u2083, with included sand grains<\/td>\n<\/tr>\n
Locality<\/td>\nM\u00e1lyi clay pit, Miskolc District, Borsod-Aba\u00faj-Zempl\u00e9n County, Hungary<\/td>\n<\/tr>\n
Dimensions<\/td>\n8.5 \u00d7 6.5 \u00d7 5.0 cm<\/td>\n<\/tr>\n
Weight<\/td>\n18088 g<\/td>\n<\/tr>\n
Specimen Size<\/td>\nCabinet specimen <\/td>\n<\/tr>\n
Color<\/td>\nSandy white to beige<\/td>\n<\/tr>\n
Luster<\/td>\nMatte<\/td>\n<\/tr>\n
Crystal Habitus<\/td>\nSpherical to nodular intergrown aggregates<\/td>\n<\/tr>\n
Surface<\/td>\nSandy and fine-grained<\/td>\n<\/tr>\n
Formation<\/td>\nCalcite formation within sandy and clay-rich sediments<\/td>\n<\/tr>\n
Inclusions<\/td>\nSand grains<\/td>\n<\/tr>\n
Special Feature<\/td>\nThree-dimensional sand calcite group from M\u00e1lyi<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

This sand calcite specimen comes from the M\u00e1lyi clay pit near Miskolc in Borsod-Aba\u00faj-Zempl\u00e9n County, Hungary. Numerous rounded to nodular aggregates are intergrown into a three-dimensional, branching group. The individual aggregates show spherical to bubble-like forms and in places resemble a chain or a grape-like cluster. Their surfaces are matte and have a sandy texture. 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