State/Location:
Cross River: Ikom, Ibine Oban, Mfamosing, Okorotong Hills,
          Akamkpa, Obudu Akwa-Ibom: Iwuo Ukem, Ibeno beach, Mbo
Benue: Buruku, Gboko, Guma, Katsina Ala, Vandeikya, Agato,
            Logo
Abia: Ukwa East, Aba North, Isiala-Ngwa North, Isiala-Ngwa 
         South, Ukwa East, Ukwa West.
Imo: Ihiagwa, Obinze, Isu, Njaba, Obowo.
Enugu: Enugu-Ekulu, Igbo Eze North and South, Isi-Uzo, Nkanu East, Udi, 
           Uzo-Uwani.
Lagos: Apapa, Badagry, Epe, Eti-Osa, Ibeju-Lekki, Ikeja, Ikorodu, Lagos Island, Ojo.
Ondo: Igbokoda, Atijere, Akata-Agbala, Zion Pepe, Aboto Agerige, Ese-Odo Ikare,Ilaje
Niger: Gbako, Gurara, Lavun, Mokwa, Katcha, Muya, Wushishi, Bida
Nassarawa: Lafia, Doma, Nassarawa.
Kaduna: Kaduna
Gombe: Yamaltu-Deba, Akko, Dukku
Yobe: Ngeji (Fika), Damaturu, Jakusko, Karasuwa, Nguru, Tarmuwa, Geidam 
Borno: Dikwa, Gwoza, Maiduguri, Jere, Monguno, Kaga, Nganzai, Mobbar, 
          Magumberi, Mafa, Kaga, Kukawa, Kala/Balge, Guzamala, Gubio
Delta: Ughelli North, Ughelli South, Aniocha-North, Aniocha South, 
         Bomadi, Burutu, Ethiope-East & West, Ika-North-East, Ika South, 
         Isoko North, Isoko South, Ndokwa-East. 
Rivers: Etche, Obio-Akpor, Okrika, Oyigbo
Bayelsa: Sagbama, Southern Ijaw, Yenagoa
Katsina: Zango, Baure
Kano: Danbatta, Makoda

Estimated Reserve ( Metric Tonnes):
Benue: Possibly over 250 million 
Ondo: Over 200 million 
Delta: Not available
Katsina: Not available
Kano: Not available

Industrial Uses: 
Used in the production of glass, fused silica and as fillers in automobile tyres, rubbers, and in footwear soles.

Process Technology/Equipment: Not available

Investment Information Status and Prospects:
Cross River: Yet to be investigated
Akwa-Ibom: Yet to be investigated
Benue: Quarrying activities are going on in some locations 
Abia: Quarrying and semi processing are being carried out at Ukwa East.
Imo: Exploratory work not yet started. More investigations needed.
Enugu: Investigative work carried out by PRODA for Enugu deposits while  
            reconnaissance survey was carried out for some of the other deposits.
Lagos: Being exploited.
Ondo: Partially investigated and evaluated.
Niger: Preliminary investigation
Nasarawa: Partial investigation
Kaduna: Partial investigation
Katsina: Not being exploited

R&D Activities: Not available