Mineral processing at Carrara: regulatory framework and … · 2018. 12. 8. · Cremo 1° scelta 1.800,00 900,00 250,00 Venatino – Cremo 2° scelta Paonazzo – Zebrino 800,00 400,00

STONECHANGE 2016 - STONE SECTOR and CHANGING TRENDS

Carrara 16-17 June 2016

Mineral processing at Carrara: regulatory framework and production assessment

A. Criscuolo M. Tonelli

Carrara Municipality



Geographic framework

Marble region 20 km2 4 basins between 300 ÷1200 m on sea level 80 Quarries in operation



Historic framework

Beginning activities in VI century B.C. Roman period until 400 A.D. Start again from 1200 to date



Dimensional stone productions

Mining stock

Year 1985 1990 1995 2000 2005 2010 2011 2012 2013 2014 2015

Blocks

(ton x

1000) 878 950 1.182

912

878

980

965

871 927 917

922

Debris

(ton x

1000)

-

-

1.600

3.565

4.263

3.110

2.972

2.741 3.034 2.376

2.464

Extension = 14 km2

Thickness ~ 0.6 km

Deduction to 40%

Yield 25% = 2.250 mil ton

Duration (1 mil t/y) = 2.250 y

Production trend 1985-2015 Production yield block/debris

Technical limits

Enviromental limits

Market require



Legislation 1: Mining Law (R.D. 1443/1927)

1^ cat. raw materials Mine = public concession 2^ cat. raw materials Quarry and Peat bog = outward land supply



Legislation 2: Municipality marble lands regulations (1995-2005)

Editto Maria Teresa d’Este 1751 Beni Estimati (32%)/ Agri Marmiferi (68%) Cadastral division



Legislation 3: Tuscany Region Law n. 35/2015 Processing project authorization Products: - cut materials - derivatives of cut materials Duty for extraction = 10% average market value for cut materials , ≤ 4,20 €/ton for derivatives Concession rent ≤ 5% average market value for cut materials New A.M. Regulations : - temporary period of 7-25 years - optimal development areas - Upon payment and temporary administrative concession (≤ 25+2 years) - Public tender



Commercial varieties and types

Stratigraphy and quality Squared blocks/ Semi-squared bloks/ Unshaped blocks Apuan production 2004

Commercial

classes

Statuario

Calacatta

Cremo

Bianco C

Venato C

Bardiglio

Bianco C/D

Venato C/D

Bianco D

Venato D

Nuvolato

Dark

marbles

Total

Total % 2 17 42 37 2 100

Squared

blocks %

27 17 16 44 69 28

Semi-squared

bloks%

32 19 24 23 23 23

Unshaped

blocks %

41 64 60 33 8 49



Economic evaluation of production

Quarry table with: % commercial qualities % types for each quality Market prices list Weighted average = production economic value

Quarry n. ….. Types

Qualities % Healthy

bloks %

Semi-squared

bloks %

Unshaped

bloks %

Bianco C 20 20 30 50

Bianco C/D 40 20 30 50

Nuvolato 40 40 60 /

Types Squared healthy

bloks

Defective / semi-

squared bloks

Much defected /

unshaped bloks

Qualities €/ton €/ton €/ton

Statuario 1° scelta 4.500,00 2.000,00 400,00

Calacatta 1° scelta 4.500,00 2.000,00 400,00

Statuario 2° scelta

Calacatta 2° scelta 2.250,00 1.000,00 300,00

Cremo 1° scelta 1.800,00 900,00 250,00

Venatino – Cremo 2°

scelta Paonazzo –

Zebrino

800,00 400,00 175,00

Bianco Carrara C

Venato C – Arabescato 480,00 240,00 100,00

Bianco Carrara C/D

Venato C/D – Verdello 280,00 140,00 70,00

Nuvolato – Bardiglio 200,00 100,00 60,00

Bianco Carrara D

Venato D 140,00 70,00 40,00

Dark marbles 90,00 50,00 /



New quarries concessions and evaluations Financial evaluation :

Economic profit x quarry life New concessions: - optimal development areas -social-economic evaluation (preliminary project, enviroment management , occupational development, investments, concession rent) -short production chain



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Documents

Mineral processing at Carrara: regulatory framework and … · 2018. 12. 8. · Cremo 1° scelta 1.800,00 900,00 250,00 Venatino – Cremo 2° scelta Paonazzo – Zebrino 800,00 400,00