This volcano is relatively small and composed of volcanic cinders. what kind of volcano is it?

The answer is scoria cone. Scoria Cone Volcano is also known as cinder cone.  Some scoria cones are not accompanied by a lava flow and vice versa. Some lava flows squeeze out near the base of the scoria cone. Approximately of scoria is commonly composed of 50% silica and 10% calcium oxide and lesser contents of potash and soda.

ń, wǒ shuō yīngyǔ, dàn wǒ huì shuō qítā yǔyán, rú xībānyá yǔ fǎyǔ yìdàlì yǔ hé pǔtōnghuà, suǒyǐ bùyào pànduàn, dànshì