Corsi Collection of Decorative Stones

view of stone 133

Corsi 133, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 133  
Name and quarry location: Portoro, from Portovenere, Liguria, Italy  
Geological description: Black fine-grained weakly metamorphosed limestone with thin white calcite-filled veins, and with stylolites, sinuous wider veins and pods of calcite coloured yellow by included goethite.  
Comments: This is the stone best known as 'portoro'. The main source is the area around Portovenere (including Spezia and Lerici), and it has been quarried since the late 16th century, sometimes sporadically, right up to the present day (Price, 2007). It has been exported worldwide. Note that the name 'portoro' was also used for generally inferior black and yellow ‘marbles’ from localities in northern Italy, according to Jervis (1889), but such stones were not transported widely.  
References: Dubarry de Lassale (2000) 252-253; Jervis (1889) 258-259; Mielsch (1985) 62; Miller (1994); Pieri (c.1958) tav.XXIX; Price (2007) 86; Rogers (2008) 51; Seeman (1999) 58; Watson (1916) 170-171  
Further information:

Corsi's classification: Class 1. Marbles; Section 2. Veined marbles; Species 7. Yellow and black marbles  
Corsi's text: 57.3 Giallo e nero di Porto Venere  

Full entry in English

Enter some search terms
Show results as:

search tips

Searches the database for all stone records containing the words you enter. To search for a text string, put it between quotation marks. To search for stone records that don't contain a word, put a minus sign in front of it.

For example, entering: granite "coarse-grained" -Egypt will find all the coarse-grained granites that do not come from Egypt.

Terms of three characters or less have not been indexed.