Calcit

What Calcit does

Calcit is a privately held Slovenian producer of calcium carbonate pigments, functional additives, and granulates, founded in 1995 and headquartered in Stahovica, Slovenia. The company operates three wholly-owned production plants — Calcit d.o.o. (Slovenia, near the largest domestic calcite and limestone deposits), Calcit Lika d.o.o. (Gospić, Croatia, opened 2012 with an in-house quarry), and Calcit Zeeland B.V. (Terneuzen, Netherlands, on the North Sea coast) — and is the second-largest European producer of ground calcium carbonate (GCC) papermaking fillers with a 20% market share. Its six core product lines (CoverPlex, HydroPlex, CalPlex for paper and paints; PolyPlex for plastics; Terazzo for plaster/glass/animal feed; Sands for construction) are produced from naturally mined calcium carbonate and tailored to customer-specific particle distribution, whiteness, and purity requirements.

The company's technical foundation rests on modern extraction and processing technology, ISO 9001:2015- and ISO 14001:2015-certified operations, a development and analysis laboratory, and an R&D function that engages 30% of its 300+ employees across chemistry, microbiology, mechanical engineering, and mining. Distribution is a structurally significant capability: Calcit runs 800 rail freight wagons alongside truck, river barge, and ocean vessel logistics, with direct rail links at the Gospić and Terneuzen sites and a river-barge corridor from the Netherlands deep into Central Europe. The R&D Center at Stahovica was expanded in June 2025.

Calcit's go-to-market is sales-led B2B, with approximately 80% of revenue from the paper industry and the balance spread across paints/coatings, plastics/rubber, glassmaking, pharmaceutical/food, agriculture, and construction. Pricing is undisclosed and contracts are customized per customer logistics needs; the company pursues demand generation via major European industry trade fairs (K 2025, Compounding World Expo, Zellcheming, Paper&Biorefinery, Plastpol) and direct enterprise engagement. In June 2025, Calcit added a Central European kaolin distribution partnership with Thiele Kaolin Company, including a new slurry make-down facility at Stahovica. Ownership remains with founders and management; no external investor or public-market status is disclosed.

Name

Calcit

Legal name

CALCIT d.o.o.

Website

https://www.calcit.si

Company type

Private

Operating status

Operating

Headcount range

251–500 employees

Short description

Calcit is a privately held Slovenian producer of calcium carbonate pigments, fillers, and granulates, operating three European plants (Slovenia, Croatia, Netherlands) to supply paper, paints, plastics, glass, pharmaceutical, agriculture, and construction customers across Europe.

Ownership category

akta.pro rank

Product category

Industrial Minerals

NAICS

Nonmetallic Mineral Product Manufacturing (327)

SIC

Abrasive, Asbestos & Misc Nonmetallic Mineral Prods (3290), Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400)

akta.pro primary industry

Calcium Carbonate (GCC/PCC) (IMAEAFAA)

akta.pro secondary industries

Limestone Quarrying (Industrial & Construction Grade) (IMAKAHAC), Kaolin & Ball Clay (IMAEAFAB), Mineral/Particulate Thickeners (Silicates, Clays, Calcium Carbonate as texturizers) (AFAJAMAJ)

Keywords

• Calcium carbonate fillers
• Industrial mineral pigments
• Paper coating pigments
• Construction aggregates
• Calcium carbonate granulates

Headquarters

HQ city

Stahovica

HQ country

Slovenia

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Personnel, Supply Chain, Technology or R&D, Infrastructure

Revenue model

1. Calcium Carbonate Products — Pigments, Fillers and Granulates: Calcit generates revenue by manufacturing and selling calcium carbonate pigments, functional additives and granulates to industrial customers across Europe. The company serves the paper, paints, plastics, glassmaking, pharmacy, agriculture, ecology, construction, and other industries. Nearly 80% of revenue comes from the paper industry. Revenue is derived from product sales with customized logistics and supply chain solutions.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

Calcit mines and processes natural calcium carbonate (CaCO3) into industrial pigments, functional fillers, and granulates. The company produces branded product families for the paper, paint, plastics, glass, pharmaceutical, food, agricultural, and construction industries, operating three production plants across Slovenia, Croatia, and the Netherlands.

Product overview

Calcit is a producer of calcium carbonate pigments, functional additives, and granulates. The product portfolio consists of six core product lines organized by application: CoverPlex, HydroPlex, and CalPlex serve the paper and packaging industries as coating pigments and fillers; PolyPlex addresses plastics and printing inks; Terazzo serves construction, glass, and animal feed sectors; and Sands provides construction aggregates. All products are derived from natural calcium carbonate with focus on chemical purity and whiteness.

Differentiator

Problem solved

Functional benefit

Brands

• CoverPlex: Special coating pigments used in production of all types of paper and cardboard with narrow particle distribution.
• HydroPlex
• CalPlex
• PolyPlex
• Terazzo
• Sands

Products and services

• CoverPlex
• HydroPlex
• CalPlex
• PolyPlex
• Terazzo
• Sands

Quantifiable outcome

• 20% European market share in GCC papermaking fillers — second largest producer in Europe
• +2 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• Thiele Kaolin CompanycoreChannel Partner/ Reseller/ Distributor · 3 June 2025Calcit announced a new distribution partnership with Thiele Kaolin Company (U.S.-based producer of high-quality kaolin products). Under this agreement, Calcit represents and distributes Thiele's kaolin products in Central Europe. Calcit oversees sales, technical service, and the entire supply chain in Central Europe, including slurry preparation in a new slurry make-down facility at the Stahovica headquarters in Slovenia. This partnership combines both companies' technical expertise and application knowledge to better serve industries such as paper, paints, plastics, and rubber. Dr Boris Brus, Calcit CCO & R&D, noted that adding clay to Calcit's portfolio is a major strategic step strengthening their position in key industries.

Scale indicators8 records

Recent moves9 records

Expansion highlights6 records

Direct peers

• Omya: Global market leader in calcium carbonate fillers and pigments, especially ground calcium carbonate (GCC) for paper, paints, plastics, and adhesives. Directly comparable as the dominant specialty GCC producer competing with Calcit for European paper and industrial mineral customers.
• Imerys: French multinational producing a broad range of industrial minerals including ground and precipitated calcium carbonate for paper, paints, plastics, and construction. Closely comparable in product portfolio, European focus, and customer overlap with Calcit.
• Minerals Technologies Inc. U.S.-based specialty mineral producer with significant precipitated calcium carbonate (PCC) and GCC operations serving paper, packaging, and industrial customers globally. Comparable as a direct competitor in calcium carbonate fillers, particularly for papermaking applications.
• SCR-Sibelco: Belgian global industrial minerals group producing calcium carbonate, silica, and specialty fillers. Comparable as a large European-headquartered minerals producer with overlapping product lines and customer base in paints, plastics, and paper.
• Nordkalk: Nordic producer of limestone-based products including ground calcium carbonate fillers, lime, and aggregates. Comparable to Calcit in limestone quarrying, GCC production, and Northern European customer focus in paper, construction, and environmental applications.
• Schaefer Kalk: German calcium carbonate and lime producer with GCC and precipitated calcium carbonate product lines serving paper, paints, plastics, and construction. Comparable mid-sized European mineral filler producer competing for similar industrial customers.

Broad incumbents

• Lhoist: Belgian global leader in lime and dolime products derived from limestone. Comparable in upstream limestone quarrying and mineral processing capabilities, with partial overlap in industrial minerals and filler applications beyond Calcit's GCC focus.
• Carmeuse: Global lime and limestone producer with operations across Europe and the Americas. Comparable in raw limestone extraction and industrial mineral processing, with broader lime focus compared to Calcit's calcium carbonate specialty.

Emerging players

• Thiele Kaolin Company: U.S.-based kaolin miner and processor now distributed by Calcit in Central Europe under a 2025 partnership. Comparable as a specialty industrial mineral supplier serving paper, paints, and plastics, now commercially tied to Calcit's European sales network.

Regional players

• Quarzwerke Group: German family-owned producer of industrial minerals including calcium carbonate, silica, and feldspar for paints, plastics, construction, and paper. Comparable mid-sized European mineral specialist competing with Calcit in filler and pigment markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/calcitdoo

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Calcit