Shiva Purana
यथेष्टं लिंगमारोप्यं यत्र स्यान्नित्यमर्चनम् । पार्थिवेन तथाप्येनं तैजसेन यथारुचि ३ ।
It can be of Pārthiva (Earth), Āpya (Watery) or Taijasa (fiery) type.
english translation
yatheSTaM liMgamAropyaM yatra syAnnityamarcanam । pArthivena tathApyenaM taijasena yathAruci 3 ।
hk transliteration by Sanscript