{"product_id":"calcium-carbonate-chalk-dunging-mordanting-natural-dyeing","title":"CALCIUM CARBONATE (Chalk) | Dunging, Mordanting \u0026 Natural Dyeing","description":"\u003ch2\u003e\u003cspan\u003eTraditional Chalk for Cellulose Mordanting \u0026amp; Natural Dyeing\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCalcium carbonate, commonly known as chalk, has long been used in natural dyeing and textile preparation. It is particularly valued in traditional cellulose mordanting, where it is used during the dunging process to help stabilise aluminium acetate and prepare fibres for dyeing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAt AppleOak FibreWorks, we offer two sources of calcium carbonate:\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eBlanc de Meudon (France)\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA traditional, finely milled chalk widely used in textile work, natural dyeing and decorative applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eBurren Limestone Chalk (Co. Clare, Ireland)\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCollected from limestone sourced near the Burren, one of Ireland's most iconic limestone landscapes. Rich in naturally occurring calcium carbonate, this minimally processed chalk performs beautifully for dunging and textile work.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAs it is collected in its natural state, occasional small stones or mineral particles may be present. If required, simply sieve before use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eProduct Details\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCalcium Carbonate\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eAlso Known As\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eChalk, Blanc de Meudon, Blanc d'Espagne\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eFunction\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDunging, mordanting and dyeing aid\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eForm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFine powder\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSuitable For\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eNatural dyeing, textile preparation, pigment work\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eUses in Natural Dyeing\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCalcium carbonate is commonly used for:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDunging after aluminium acetate mordanting\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTraditional cellulose mordanting processes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStabilising aluminium acetate within fibres\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMadder dye baths where water contains insufficient calcium\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePigment and colour preparation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003epH adjustment in selected dye processes\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eHistorically, dunging often involved cow dung. Today, calcium carbonate provides a cleaner and more practical alternative while serving a similar purpose in many mordanting systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eSuggested Usage\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan\u003eDunging Bath\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1–2 teaspoons per litre of water\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eor approximately 1% WOF (weight of fibre)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eor 1–3g per litre\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eStir thoroughly before use, if you are using Burren stone, double the quantity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eCalcium \u0026amp; Madder\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCalcium plays an important role in many madder dye baths.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhere local water is naturally soft and low in calcium, adding calcium carbonate can help encourage brighter, clearer red shades.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eChoosing Between Our Two Options\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBoth products perform well in natural dyeing applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eChoose Blanc de Meudon if:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e• you prefer a traditional textile-grade chalk\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• you want a consistently fine texture\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eChoose Burren Limestone if:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e• you value locally sourced materials\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• you enjoy working with minimally processed natural materials\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• you appreciate a connection to place and landscape\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eJoin Our Free Natural Dyeing Community\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eLooking to deepen your natural dyeing knowledge and connect with other passionate dyers?\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eStart by joining our free Natural Dyers Academy community, where you'll find inspiration, discussions, resources, and opportunities to learn more about natural dyes, mordanting, fibre preparation, colour exploration, dye plant cultivation, and sustainable textile practices.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eJoin the free community here:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003ca href=\"https:\/\/the-natural-dyers-academy.mn.co\/share\/Mz7coMI6VgbJMchB?utm_source=manual\"\u003e\u003cspan\u003ehttps:\/\/the-natural-dyers-academy.mn.co\/share\/Mz7coMI6VgbJMchB?utm_source=manual\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInside the community you'll find:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e• Natural dyeing discussions and inspiration\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Helpful resources and learning opportunities\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Dye plant growing and harvesting tips\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Colour studies and recipe sharing\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Community support from fellow natural dyers\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Information about workshops, courses, and Academy membership options\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIf you'd like more structured learning, in-depth tutorials, workshops, and exclusive resources, you can also explore our full Natural Dyers Academy membership from within the community.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003ePlease Note\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Burren Limestone Chalk is a natural material and may contain occasional small stones or mineral particles. Sieving before use is recommended if a finer texture is required.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor textile, craft and technical use only.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNot intended for food, cosmetic or medicinal applications.\u003c\/span\u003e\u003c\/p\u003e","brand":"AppleOak FibreWorks","offers":[{"title":"50g \/ Burren Limestone","offer_id":51839843369296,"sku":null,"price":6.5,"currency_code":"EUR","in_stock":true},{"title":"50g \/ Blanc de Meudon","offer_id":51839843402064,"sku":null,"price":7.0,"currency_code":"EUR","in_stock":true},{"title":"75g \/ Burren Limestone","offer_id":51839843434832,"sku":null,"price":7.0,"currency_code":"EUR","in_stock":true},{"title":"75g \/ Blanc de Meudon","offer_id":51839843467600,"sku":null,"price":7.5,"currency_code":"EUR","in_stock":true},{"title":"100g \/ Burren Limestone","offer_id":39861477769270,"sku":"","price":7.5,"currency_code":"EUR","in_stock":true},{"title":"100g \/ Blanc de Meudon","offer_id":51839843500368,"sku":null,"price":8.0,"currency_code":"EUR","in_stock":true},{"title":"250g \/ Burren Limestone","offer_id":44298162143536,"sku":"","price":9.5,"currency_code":"EUR","in_stock":true},{"title":"250g \/ Blanc de Meudon","offer_id":51839843533136,"sku":null,"price":10.95,"currency_code":"EUR","in_stock":true},{"title":"500g \/ Burren Limestone","offer_id":44298166731056,"sku":"","price":12.95,"currency_code":"EUR","in_stock":true},{"title":"500g \/ Blanc de Meudon","offer_id":51839843565904,"sku":null,"price":15.95,"currency_code":"EUR","in_stock":true},{"title":"1kg \/ Burren Limestone","offer_id":44298167615792,"sku":"","price":19.5,"currency_code":"EUR","in_stock":true},{"title":"1kg \/ Blanc de Meudon","offer_id":51839843598672,"sku":null,"price":25.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0098\/2918\/7641\/files\/Calcium_Carbonate.jpg?v=1781700385","url":"https:\/\/appleoakfibreworks.com\/products\/calcium-carbonate-chalk-dunging-mordanting-natural-dyeing","provider":"AppleOak FibreWorks","version":"1.0","type":"link"}