According to the wiki page https://stellaris.paradoxwikis.com/Spaceborne_aliens#Ether_Drake
The planet it guarded, Dragon's Hoard, is a very wealthy planet with +30 Energy and Minerals. Putting a mining station on it will eventually provide two special rewards (MTTH 600 months): Enable researching of Tech Artificial Dragonscales, the only Level 6 Armor. Discover a Dragon Egg and get the option to smash it for 300 Influence or issue a special project to incubate the egg and hatch a Young Drake. The Young Drake has between 14k and 16k fleet power.
My question is if you build a habitat on the Dragon's Hoard instead of a mining station, is it still possible to get the Artificial Dragonscales tech or the Ether drake?